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The junction boxes and connectors of photovoltaic modules are small parts that are not noticeable. However, if the quality of these two widgets is not high enough, it will be a huge safety hazard! At present, there should be too many fires in the country due to overheating of connectors, causing huge losses to power stations.

Previously, a well-known foreign agency Fraunhofer ISE and TÜV jointly investigated the fire causes of photovoltaic systems and found that the first and third fire causes were related to the connector.

Failure analysis caused by metal parts

The metal part is the main body of the connector and the most important flow path. When operating in various environments, stable resistance is a prerequisite to ensure the normal operation of the connector.

1. Failure analysis of resistor Rco

The resistance Rco is the resistance of the overlapped part of the metal part after the connector is mated. If Rco increases abnormally, it will cause the temperature to rise, which will cause a fire in the middle of the connector.

2. Failure analysis of resistor Rcr

The crimping resistance Rcr is mainly related to the crimping quality and crimping process. We can judge the quality of the crimp by the compression ratio and crimp section. Good crimping requires a tight profile without gaps and a regular shape. For commonly used 4mm2 cable crimping and contact resistance at the crimping point, the standard IEC2742 / 05 also puts forward the requirement of less than 0.2mΩ, while IEC60352-2 stipulates that the pull-out force of the crimping end must be greater than 310N.

Failure analysis due to sealing performance

Because the connector is outdoors, it has strict requirements for sealing performance.

For example, some connectors have IP65 and IP68 protection levels. Because the connector is mated to the cable, when it comes to tightness, the choice of cable becomes very important. In general, different connector models correspond to different cable outer diameters, and the purpose is to ensure sealing performance.

For example, the MC4 connector can match photovoltaic cables with an outer diameter of 3-9mm (conductor cross-sectional area of 1.5-10mm2), but its corresponding models are up to 6 types. In order to verify the matching of the cables, after the connectors are assembled, relevant tests are performed, such as IP tests, wet insulation tests, and withstand voltage tests.

Failure analysis caused by insulation materials

The choice of insulation material directly determines the quality of the connector. A good connector needs to choose the right insulating material, and whether it is suitable is mainly determined by the requirements of the connector, such as weather resistance, heat resistance, flame retardancy, mechanical properties, and insulation properties of the material. Photovoltaic connector insulation The choice of material is the result of comprehensive consideration of these several properties. Choosing the right material can reduce the probability of misfire under high temperature rise.

In addition, it is not possible to use regrind for photovoltaic connectors. The reason for this is because the use of regrind has its extremely strict regulations and product inspection measures. Only in this way can it ensure that the performance of its products does not drop much. The photovoltaic connector is required to be used for more than 25 years in many clients, which means that it has very high requirements for materials.

Although the use of recycled materials can reduce product costs, it increases the probability of product failure at the end of use, so connector manufacturers should eliminate them.

To sum up

Photovoltaic connectors account for a relatively low cost in photovoltaic power plants, but they are a key component. In the early stage of power station construction, the risk of failure caused by the connector is often not taken seriously, but in the later stage it will become a pain point for the operation and maintenance of the power station.

The operation and maintenance costs caused by the failure of the connector include the loss of power generation revenue, the cost of spare parts, labor costs, and safety risks. These operation and maintenance costs will ultimately affect the investment return of the power station. Photovoltaic connectors provided by suppliers with reliable quality and rich experience in production and assembly are one of the foundations to ensure the normal and stable operation of photovoltaic power stations, and the normal operation of power stations is one of the prerequisites to ensure the owners' maximum benefits.

Sunkye is a qualified mil spec military connector manufacturer and supplier, who support custom connectors for a complete range of high-performance applications. A wide variety of military connector options are available to you, feel free to contact us.

Mil spec connector, also called military grade connector or military style connector or military standard connector or military power connector, has been developed to satisfy the market requirements for ultra-tiny size, high performance, great quality, and top qualified customized connector. Sunkye mil grade connector is widely applied for the board to board, system to system, application to application, equipment to equipment. Specially designed for extreme environments like the defense industry, but our mil spec connectors can also be used in a variety of commercial tasks. Our automotive terminal connectors can withstand the harsh conditions of the road and off-road transportation. The combination of Sunkye's mil grade connectors provides reliable solutions for improving the connectivity of critical systems.

With the rapid development of electronic information technology, the upgrading speed of electronic products is getting faster and faster. The production and sales of consumer electronics products, mainly flat-panel TVs, notebook computers, digital cameras, smart phones, and other products, have continued to grow, which has also contributed to the continuous growth of the consumer electronics connector market.

Once upon a time, the development of connectors in the field of consumer electronics was quite smooth, but with the maturity of consumer electronics technology and the increasing number of connector companies entering the consumer electronics industry, the market appeared to be in oversupply. Domestic connector companies, especially in the field of consumer electronics, have a fierce price war on connectors.

Not only that, with the USB TYPE-C interface occupying the market and the emergence and application of wireless technology, not only will most of the interface specifications be unified to reduce the interface, but also the connector technology on consumer electronics tends to be thinner and shorter Technically, a large part of domestic small and medium-sized connector companies have been eliminated. With shrinking market share, meager profits, and improved market access qualifications, the consumer electronics market is no longer as attractive as before.

Compared with the current consumer micro electrical connectors market, the industrial connector market has larger capacity and higher profits. At the same time, it has relatively more demanding military-grade connectors, and the market access qualification should be loose, which can meet most connector companies. Participate in competition. The country will vigorously develop the manufacturing industry, which is also good news for industrial connectors. Therefore, it is natural for domestic connector companies to turn their attention to the industrial connector market.

Seeking a way out in industrial connectors has become a coincident choice for connector manufacturers.

Sunkye is a global solutions provider of connector solutions and differentiated products to the world-wide interconnector industry.

The basic characteristics of the second-generation circular connector are:

1) There are three types of plug and socket connection: threaded connection, bayonet connection and push-pull connection, but the bayonet connection is the main method.

2) The termination methods of pins, jacks and wires are soldered and crimped.

3) There are two types of jacks: open type and closed type, but the main type is closed type.

4) The minimum working diameter of the male contact (pin) is 1 mm, which is a medium-density electrical connector.

5) The applicable ambient temperature of the electrical connector is -60 ℃ ～ ＋ 150 ℃.

6) There are categories of electrical connectors such as unsealed, sealed and wall-penetrating; installation methods include square plates and discs, square plates have component sockets and cable sockets, and there are two types of front installation and rear installation; Normal key position and four variable key positions; tail attachments include straight, curved and shielded varieties.

Compared with the first-generation circular electrical connectors, the second-generation circular connectors have the following technological advances:

1) The density of micro electrical connectors increases, that is, the volume and weight decrease relatively. This is a very important consideration for the selection of aerospace and aerospace electrical connectors.

2) The bayonet connection is added to the connection method of the electrical connector. The advantage of threaded connection is high connection reliability, which is suitable for long-term strong vibration environment, but the disadvantage is that the coupling separation speed is slow and the connection is not convenient. The advantage of the bayonet connection is that the connection ring can rotate up to 120o to realize the insertion and separation, which is very convenient. Therefore, the bayonet-connected electrical connector is also called a quick-release electrical connector. Therefore, in addition to the long-term use of screw-connected electrical connectors in a strong vibration environment, the rest often use bayonet-connected electrical connectors.

3) In addition to welding, the termination of the contact piece and the wire is also crimped.

Sunkye is a qualified mil spec military connector manufacturer and supplier, who support custom connectors for a complete range of high-performance applications. A wide variety of military connector options are available to you, feel free to contact us.

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Mil spec connector, also called military grade connector or military style connector or military standard connector or military power connector, has been developed to satisfy the market requirements for ultra-tiny size, high performance, great quality, and top qualified customized connector. Sunkye mil grade connector is widely applied for the board to board, system to system, application to application, equipment to equipment. Specially designed for extreme environments like the defense industry, but our mil spec connectors can also be used in a variety of commercial tasks. Our automotive terminal connectors can withstand the harsh conditions of the road and off-road transportation. The combination of Sunkye's mil grade connectors provides reliable solutions for improving the connectivity of critical systems.

Sunkye automotive series connectors onboard power applications in the rail market allow for multiple customer-defined configurations, enable easy assembly and further enhance flexibility with the ability to integrate local cabling and components.

Sunkye provides high-quality mil spec connectors and custom connectors for automotive, on and off-highway, and hybrid and electric vehicles to electrically and mechanically join wires and cables, printed circuit boards, integrated circuit packages, and batteries. Automotive power connectors are built to withstand tough conditions and suit the needs of varying applications.

Features of Sunkye Automotive Power Connectors

The series' removable and interchangeable modules also simplify new and retrofit installations.

Mitigate maintenance requirements, lower the total cost of ownership, and provide space and weight savings.

Sunkye automotive electrical connectors include Ip68 waterproof connector, D108 circular electrical connector, MIL-DTL-26482 small circular connector, are Qualified for harsh-environment, high temperature, anti-oil working environment.

High performance to supports multi-parallel for the testing programming for the high-performance sports racing cars parallel durability and performance programs covering more than 50,000 km, with various 24- and 36-hour tests being completed by multiple Race Prototype (RP) cars under the extreme pressure of endurance racing. The latest high-performance sports racing cars aerodynamics match with the lightweight design carbon fiber materials developed to deliver even greater levels of stability and aerodynamic efficiency than its road car stablemate.

Meanwhile, the Sunkye automotive terminal connectors also support multi-lane of sensors and data analysis capabilities developed in automotive.

When deciding which Mil-Spec automotive connector will suit your needs, there a few things to consider:

Each connector kit is sold as pictured, with contacts as well as insert / removal tools.

A "Matched Set" is comprised of a plug and receptacle.

Accessory threads are provived for backshells and SB adapters. Sold seperatley.

Heat shrink boots are available and sold seperatley. See product listings for details.

If you are looking for reliable professional automotive connector manufacturers, Sunkye will be your best choice!

SUNKYE TYPES OF MIL SPEC CONNECTORS

Mil spec connector, also called military grade connector or military style connector or military standard connector or military power connector, has been developed to satisfy the market requirements for ultra-tiny size, high performance, great quality, and top qualified customized connector. Sunkye mil grade connector is widely applied for the board to board, system to system, application to application, equipment to equipment. Specially designed for extreme environments like the defense industry, but our mil spec connectors can also be used in a variety of commercial tasks. Our automotive terminal connectors can withstand the harsh conditions of the road and off-road transportation. The combination of Sunkye's mil grade connectors provides reliable solutions for improving the connectivity of critical systems.

Sunkye Connector: A bridge for transmitting signals between systems and modules.

1. Connector is the key component of electrical connection or signal transmission

Connectors are essential components for electrical connection or signal transmission between system or complete circuit units. A connector is a functional element that connects, disconnects, or converts a circuit or optical channel by means of electrical or optical signals and mechanical forces. It is used as an electrical or optical signal connection between devices, components, equipment, and systems. , Transmit signals or electromagnetic energy, and keep the system from changing without signal distortion and energy loss.

Optoelectronic connectors are used wherever optical signal connections are required. As one of the basic components necessary for the electrical connection of circuit systems, they have been widely used in aviation, aerospace, military equipment, communications, computers, automobiles, industry, and household appliances. , Has now become one of the pillar industries of electronic information basic products.

2. New trends in connector development: high frequency and high speed, wireless transmission, miniaturization, and intelligence

The large-scale use of high-performance connectors is the development trend of the future manufacturing industry. As a bridge for communication within the circuit system, the connector has the characteristics of easy maintenance and easy upgrade, meanwhile, it can simplify the assembly process of electronic products, improve the flexibility of design and production, thereby increasing the degree of automation of the entire system and reducing costs. Therefore, the performance of the connector will affect the operating efficiency and reliability of the entire system. In the future, the diversity, performance and quality of connector products will become important factors in the entire manufacturing upgrade and development process.

Speedy connector are in great demand in more emerging areas. With the rapid development of 5G, Internet of Things, AI, and intelligent driving, the market has put forward new requirements for connector technology.

In communication equipment, connectors carry the task of data connection between terminals. The development of 5G will promote the growth of demand for wireless connectors. In automotive applications, with the continuous advancement of automotive intelligence, in addition to the original engine management system and other devices that require connector data connections, more advanced vehicle entertainment systems, intelligent driving systems, and other connectors have increasingly demanded connectors. Industrially, connectors require stronger reliability and performance. With the construction of the Industrial Internet, more reliable connectors are needed between industrial equipment and networks.

It is suitable for connecting straight and bent horn sockets, simple horn sockets and flat crimp sockets with flat cables. The connection is mainly realized by three parts, namely the pin seat, the crimping connector and the cable.

The main needle pitches are 2.54 mm, 2.00 mm, 1.27 mm; double-row form. The projection on the plug and the positioning groove on the needle seat have the function of preventing mis-insertion.

1. Cable selection

The cross-sectional size, toughness and flexibility of the cable should provide sufficient safe current load capacity and strength. Generally, it is not appropriate to use too thin wires.

2. Selection principle

The horn-type flat cable connector has horns, which takes up a lot of space, and the current usage level is generally less than 2A. When selecting, full consideration should be given to the structural requirements.

Simple horns are easy to loose due to the lack of buckle connection, and take up less space, but are not recommended for applications in vibrating environments.

It is recommended to choose a needle seat and plug with anti-insertion device.

Looking for connector solutions ltd?Sunkye is uniquely qualified to deliver turnkey custom solutions and Mil-Spec military connectors manufacturer for a complete range of high-performance applications. Our industry-leading materials knowledge, engineering design experience, and testing capabilities are key to achieving reliable service in the most extreme environments.

On the one hand, the number of 5G base stations in China has increased significantly. 5G communication spectrum is mainly distributed in high frequency bands. The higher the frequency, the faster the signal attenuation, and the smaller the coverage area at the same power.

In the 2G, 3G and 4G era, the spectrum of China ’s three major operators is mainly distributed below 2.6GHz, and the spectrum of China Unicom and mobile in the 5G stage is in the 3.4-3.6GHz range. With the increase of frequency, the number of 5G base stations will increase significantly and is expected to reach twice the number of 4G base stations.

On the other hand, the demand for 5G also brings the technological upgrade of connectors. Under the characteristics of 5G low-latency and high-bandwidth transmission, the data transmission volume has been greatly improved, and the traffic density of 5G has been increased to 100 times that of 4G. With the miniaturization and integration of 5G base stations, the space occupied by the connector is further increased. Compression, electromagnetic interference and heat dissipation have also become important issues.

Therefore, 5G has higher requirements for the density, transmission rate, heat dissipation, electromagnetic interference resistance and reliability of the connector, and the value of the connector has been further improved.

With the increase in the number of base stations and the increase in technical requirements, the connector market is expected to grow significantly and enter a high-boom cycle.

According to the forecast of the Ministry of Industry and Information Technology of China, domestic operators' investment in 5G will be 1.5 times that of 4G, and the total investment will reach 1.5 trillion yuan. As for the pace of demand, with the start of 5G construction in 2019, the scale of 5G base station construction will also Will grow rapidly.

Military connector manufacturers have deep technical accumulation and strong competitiveness, which will fully benefit from the growing demand for connectors in the communications field.

Sunkye is uniquely qualified to deliver turnkey custom solutions and Mil-Spec military connectors manufacturer for a complete range of high-performance applications. Our industry-leading materials knowledge, engineering design experience, and testing capabilities are key to achieving reliable service in the most extreme environments.

The terminal has three main parts: matching part, transition part and crimping part. The crimping part is the only part whose design is affected by the crimping process. Here are some of the most common problems and corrective actions.

1. Conductor crimping height is too small or too large

Solution: adjust the height of conductor crimping on the crimper. Use vernier calliper or micrometre to check whether the crimping height is within the specified range, and recheck according to the required frequency during the operation to maintain the correct crimping height.

2. The insulation crimping area is too small or too large

Most types of crimping tools can adjust the insulation crimp height. The correct adjustment allows the terminal to clamp the insulation at least 180 degrees without piercing the insulation. When the outer diameter of the insulating crimp of the terminal is close to the outer diameter of the cable insulation, the best method is IDT technology.

3. Loose core

Solution: fold up the cable again to form a bundle, and then insert it into the terminal for crimping. If the removal of the insulation from the cable is a separate operation, the cores may be inadvertently separated during handling or bunching. Use half stripping and keep the insulation removed so that the insulation is not completely removed from the cable until the terminal is ready to be crimped to the cable, which helps to minimize the core looseness.

4. Too short stripping length

The stripping length of the cable is too short, and the distance out of the front of the conductor crimping area cannot obtain the required outer diameter of the cable. The solution is simple: increase the stripping length of the stripping equipment to the specified value of the terminal.

5. The cable is inserted too deep

Solution: make sure that no excessive force is used to insert the cable into the crimper to make it over-voltage the cable stop of the crimper, or adjust the position of the cable stop to correctly position the stripped cable axially.

6. Over bending

Solution: adjust the position of the limit pin on the crimper. This pin is located in the crimper and contacts the joint area of the terminal when crimping the cable in the crimping area. During the crimping process, a large amount of metal at one end of the terminal (in the crimping area) moves. Such a large force tends to force the front of the terminal up unless limited by a suitable "limit pin."

7. Crimping too far forward

The reason for this problem is that the terminal and the metal strip (the metal strip connected by the terminal when you receive the goods from the manufacturer) are not in the correct position relative to the crimper. Just loosen the base plate of the interchangeable tool, and then realign the crimper to solve the problem.

8. Too small bell mouth

The correct size of the bell mouth is 2 times the thickness of the terminal material. In essence, it affects the performance of the terminal. If the bell mouth is missing or the thickness of the terminal material is less, there is a risk of cutting the wire core. Reduced core retention reduces termination strength. To correct the problem, make sure that the punch on the crimping device is correctly aligned with the base.

9. The bell mouth is too large

If the bell mouth is too large, the total contact area between the terminal crimping area and the cable will be reduced. The smaller the contact surface between the cable and the terminal, the smaller the cable drawing force. If the crimp height is correct, it may be caused by tool wear and should be replaced.

10. Tail material is too long

Solution: adjust the feeding plate on the crimper to make the terminal correctly centred in the crimper. Another sign that the terminals are not properly centred is that the bellmouth is not properly formed. This occurs because the bell mouth has a spatial relationship with the tool of the tailings.

11. Installation of an intelligent pressure management system

The intelligent pressure management system can monitor the operation of the terminal machine in real-time, find out the abnormal pressure in time, and adjust and maintain the equipment in time as described above! In this way, the machine has been in a good state of operation, thus indirectly reducing the production of defective products!

However, it should be noted that although the pressure management is very sensitive and can be used to evaluate the operation of the machine, in normal production, the tolerance is usually set to a large extent to reduce the number of alarms, so the various adverse conditions described above are basically impossible to detect all without leakage.

The intelligent pressure management system can detect 100% of the fatal problems such as all the core wires are cut off, all the glue is wrapped, and the terminals are deformed. These fatal problems cause great pressure changes. It is the main significance to prevent these fatal problems from flowing to customers!

Sunkye is a professional connector manufacturer, welcome to order!

Compared with the outer conductor, the inner conductor with a smaller size and lower strength is more likely to cause poor contact and lead to connector failure. Most of the inner conductors of the connector adopt elastic connection, such as spring claw type elastic connection, socket slotted type elastic connection, bellows-type elastic connection, etc. Among them, the socket slotted elastic connection has the advantages of simple structure, low processing cost, convenient assembly and the most extensive application.

1. The inner conductor is not fixed firmly

In order to assemble, the structure of many RF coaxial connectors is that the inner conductor is divided into two sections by the support of the medium and then connected with the thread. However, due to the small diameter of the inner conductor, the connection strength of the inner conductor is very poor, especially for some small RF coaxial connectors, if the screw connection is not fixed with glue. Therefore, when the connector is connected and disconnected for many times, under the long-term action of torsion and tension, the internal conductor thread may loosen and fall off, leading to connection failure.

One of the common structures of the RF coaxial connector is that the inner conductor, dielectric support and outer conductor are fixed together by adhesive. If the amount of glue applied is not enough or the connection strength of the glue is not enough during the assembly of this structure, the glue applied part may be broken due to the stress during the use, which will cause the inner conductor to rotate or move axially, the inner conductors cannot form good electrical contact, and the connection fails.

Improvement method: when the coaxial connector is assembled, the proper amount of conductive adhesive or thread locking agent can be applied to the threaded connection to increase the reliability of the threaded connection. The adhesive with high bonding strength shall be selected, and the glue shall be filled into the whole glueing hole during glueing; the knurling at the glueing place of the inner conductor shall be increased to increase the contact area between the inner conductor and the adhesive, so as to prevent the inner conductor from rotating; the radial dimensions and tolerances of the inner conductor, the outer conductor and the medium support shall be adjusted properly, so that the fit between the inner conductor and the medium support, the medium support and the outer conductor is interference. Fit also can make the three together more firmly.

2. The size of a socket or pin of the inner conductor is incorrect

If the hole diameter of the conductor in the jack is smaller than the specified size, when the pin of the conductor in the pin enters the jack, it will cause the jack to expand excessively, and the shape variable will exceed its elastic deformation range, resulting in plastic deformation, resulting in damage to the conductor in the jack; on the contrary, if the pin diameter is too small, when the pin and the jack fit, the gap between the pin and the wall of the jack is too large, and the two inside of the connector If the conductor cannot be contacted closely, the contact resistance will increase, and the electrical performance index of the connector will be very poor.

Improvement method: whether the fit of Jack and pin is reasonable or not can be measured by the insertion force and retention force when the standard gauge pin and the conductor in Jack fit. Therefore, we can take the insertion force and retention force as an inspection standard, and adjust the dimensions and tolerances of the jack and the pin, as well as the aging treatment process of the conductor in the jack, so that the insertion force and retention force between the pin and the jack are in a proper range.

Sunkye is a professional connector manufacturer, welcome to order!

USB, the abbreviation of universal serial bus in English, is an external bus standard, which is used to regulate the connection and communication between computers and external devices. It is an interface technology applied in the field of PC.

Universal serial bus (USB) is a new data communication mode which gradually replaces other interface standards. It was jointly developed by Intel, Compaq, digital, IBM, Microsoft, NEC, Northern Telecom and other computer companies and communication companies in 1995, and gradually formed industry standards. As a kind of high-speed serial bus, USB bus's extremely high transmission speed can meet the application environment requirements of high-speed data transmission, and the bus also has the advantages of simple power supply (bus power supply), convenient installation and configuration (plug and play and hot plug are supported), simple expansion port (127 peripherals can be expanded at most through the hub), diversified transmission modes (4 transmission modes ）, as well as the advantages of good compatibility (downward compatibility after product upgrade).

Since its introduction, the universal serial bus has successfully replaced serial port and parallel port and has become one of the standard expansion interfaces and necessary interfaces for a large number of computers and intelligent devices in the 21st century. Now it has developed to USB version 3.2. USB has the advantages of fast transmission speed, convenient use, hotplug support, flexible connection, independent power supply, etc. it can connect a variety of peripherals such as the keyboard, mouse, large-capacity storage device, etc. the interface is also widely used in smartphones. The interaction between intelligent devices such as computers and external data is mainly based on network and USB interface.

1. polarization

The USB connector can only be nominally inserted in one way. It is possible to force a wrong connector, but this can cause damage to the device.

2. At least four contacts

All USB connectors have at least four contacts (some USB models may have five, USB 3.0 connectors or more), which are used for power, ground and two data lines (D + and D -). The USB connector is designed to transmit 5V up to 500mA.

3. shielding

The USB connector is shielded, so it provides a metal shell that does not belong to the circuit, which is very important to keep the signal intact in the environment with a lot of electrical "noise".

4. Powerful power connection

It is very important for the power pin to establish a connection before the data line to avoid trying to power the device through the data line, which is taken into account in the design of all USB connectors.

5. Mould strain relief

All USB cables are plastic-wrapped at the connector to prevent pressure on the cable and damage to the electrical connection.

Sunkye is a professional connector manufacturer, welcome to order!

PEEK connector, we also call it PEEK sealing terminal or HTHP connector, just as its name implies which the connector is made from PEEK material combining with metal contact and using glass sintered technology sealing PEEk material & contact so it has perfect air leakage performance. In wellhead, gate valve requires to PEEK terminal for sealing, or tubing head spool for connect gauge or control line of the outlet of the wellhead, and using on adapter spool for hydraulic control line terminated(C/L), electrical cable fit. PEEK connector, we also call it PEEK sealing terminal or HTHP connector, just as its name implies which the connector is made from PEEK material combining with metal contact and using glass sintered technology sealing PEEk material & contact so it has perfect air leakage performance. In wellhead, the gate valve requires to PEEK terminal for sealing, or tubing head spool for the connect gauge or control line of the outlet of the wellhead, and using on adapter spool for hydraulic control line terminated(C/L), electrical cable fit.

The working environment of the oil gas petrochemical industry always is harshness, dirty, high pressure, extreme temperature, chemical corrosion, low PH erosion, and various different kinds of gas. PEEK, benefits of physical performance with Pressure in 30,000PSI /207Mpa, the extreme temperature in 300℃, it satisfies for the special area and high-performance solutions.

PEEK melts at a relatively high temperature (343°C / 649.4°F) compared to most other thermoplastics. In the range of its melting temperature, it can be processed using injection molding or extrusion methods. It is technically feasible to process granular PEEK into filament form and 3D printing parts from the filament material using fused deposition modeling – FDM (or fused filament fabrication – FFF) technology. PEEK filaments have been demonstrated for producing medical devices up to class IIa. In its solid state PEEK is readily Machinable, for example, by (CNC) milling machines and is commonly used to produce high-quality plastic parts that are thermostable and both electrically and thermally insulating. Filled grades (30% Glass filled) of PEEK can also be CNC machined, but special care must be taken to properly manage stresses in the material. PEEK is considered a high-performance polymer, that is to say, its high price restricts its use to the most demanding applications only.

What is PEEK?

Polyether ether ketone (PEEK) is a colorless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications.

PEEK is a thermoplastic semicrystalline with excellent mechanical and chemical resistance properties that are retained to high temperatures. PEEK has a glass transition temperature of around 143 °C (289 °F) and melts around 343 °C (662 °F). That’s why PEEK seals and manifolds are commonly used in fluid applications. PEEK also performs well in applications where continuous high temperatures (up to 500 °F/260 °C) are common. It has high resistance to halogen, strong bronsted and Lewis acids, thermal degradation, biodegradation, Air leak: helium leak test ≤ 1× 10 -3 Pa.cm 3 /s

Because of its robustness, PEEK is used to fabricate items used in demanding applications, including bearings, piston parts, pumps, High-performance liquid chromatography columns, compressor plate valves, and electrical cable insulation. It is one of the few plastics compatible with ultra-high vacuum applications.

Beware of the difference of PEEK & PEK;

PEEK is Polyether ether keton & PEK is Polyether keton, both are very strong mechanical and chemical resistance properties but PEEk has one more molecule that means the physical performance more stability.

As a specialist in advanced mil spec connectors automotive, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology. If you want to know more details or want a quotation , just feel free to contact us!

Domestic D-sub connectors are usually divided into DB, HDB, DP, HDP, DR and HDR. You must have a headache about  various types. Today I'll help you sort out the application of d style connector.

D-sub connector, also known as D-sub miniature, is a common electrical connector in computers. D-sub connector has parallel pin arrangement and is surrounded by metal shield. The shielding end is short, similar to the English letter D. D-sub connectors have been widely used for many years.

D style connector has been used in many applications as multi-channel connector, but the most widely known is for RS-232 serial connection. In fact, D-sub connectors have been used for serial connections on most computers for many years, and today, various types of D-sub connectors can still be found on most computers.

D-sub connectors were originally called sub-miniature connectors and are now commonly referred to as D-sub-miniature connectors. Although these connectors were small when first introduced, they are no longer considered to be truly miniature connectors. D-sub connectors usually consist of two or more parallel connection lines. The connector has a metal housing in D format. This not only provides mechanical strength for connectors, but also provides some limited screening: plug and socket metal housing contact to provide screening. In addition, panel mounting connectors are usually fixed to the panel using nuts with additional threads that allow fit connectors to be fixed to prevent loosening.

As a specialist in advanced mil spec connectors automotive, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology. If you want to know more details or want a quotation , just feel free to contact us!

Space bio-3D printing from Human Cartilage to Thyroid Gland in Rodents and to Space Artificial Meat: SUNKYE Satisfies the Connection and Signal System of Bio-3D Printing in Micro-gravity Environment

Space bio-3D printing may be a concept we've heard recently. But as with 3D printing technology, there was only a short accumulation before it happened! Do we need Space bio-3D printing? Can't we perform such a complex task on Earth? Of course, the answer is yes. But research on pace bio-3D printing shows that it may be more effective in a micro-gravity environment. Meanwhile, decades of exploration of other planets will require bio-printing onboard ships to cure astronauts' diseases.

The International Space Station will be the best place to conduct such exercises. In 2018, Russian astronaut Oleg Kononenko became the first person to make Space biometric 3D printing on behalf of his country. Using a 3D printer created for the space environment, Kononenko can produce human cartilage tissue and rodent thyroid glands. The bio-3D printing engineering experiment with the cooperation of the United States, Russia and Israel began in September 2019.  On October 7, 2019, Aleph Farms, Israel's biotechnology startup, announced that it had conducted a joint experiment on the International Space Station on September 26 to successfully cultivate the first piece of artificial meat in space using a three-dimensional bio-printer. The experiment was conducted by Aleph Farms in collaboration with the Russian Biotechnology Laboratory 3D Bio-Printing Solutions and two American companies. The experiment content is to deliver bovine cells to the International Space Station and then grow them into small muscle tissues similar to traditional meat in a microgravity environment using a 3D bio-printer.

With 3D printing becoming the mainstream, bio-printing has become the core focus in the medical field, showing the potential of unlimited innovation opportunities. The environment is the key to the development of fragile cells. Even in the best research laboratories, fragile cells are usually not easy to maintain. By pressing the material in the syringe for biological printing, the cells can grow in different forms. In October 2017, the mission aboard Soyuz MS-10 failed, but the printer was eventually delivered to the International Space Station.

Researchers are curious about how microgravity can facilitate bioprinting and the growth of cells and tissues. At the same time, the recent use of this technology in space to examine other medical problems has also interested them, such as radiation and human problems. At present, the focus of the research is on how the structures are combined and how they behave. So the connection system and signal transmission are required to have a precise system and a lighter volume.

Sunkye Space Micro Connector & Nano Connector Series Environment Performance

Scientists around the world have created organizations to carry out further medical research, which continues to make progress in bioprinting. The ultimate goal includes the manufacture of human organs in the laboratory. Such innovations could have a huge impact on patients with severe illnesses, such as those waiting for organ donations. Besides, 3D printing organs offer the possibility of patient-specific nursing, which may mean that people do not have to worry about infection, rejection and severe complications.

Space 3D printing technology will play an indispensable role in future space station operation, deep space exploration and other tasks. As far as we know, it takes at least half a year for the space station to wait for the replenishment of the Earth, while 3-D printing takes only 1-2 days to produce parts that need to be replaced. Therefore, it is helpful for astronauts to manufacture necessary experimental tools, maintenance tools and spare parts under a weightlessness environment. It greatly improves the flexibility of space station experiment and the timeliness of maintenance, reduces the types and quantity of space station spare parts and operating costs, and reduces the dependence of space station on ground replenishment. And China's first space on-orbit 3D printer has already been developed successfully.Chongqing Institute of Green and Intelligent Technology of the Chinese Academy of Sciences announced that after two years of efforts, the first domestic 3D printer developed by the Institute and the Center of Space Application Engineering Technology of the Chinese Academy of Sciences has successfully completed parabolic weightlessness flight test in Bordeaux, France, and can complete 3D printing in microgravity environment.

Company Info:

Sunkye International Co., Ltd

Flat/RM, 1402B 14/F The Belgian Bank Building, Nos. 721-725 Nathan Road Mongkok HK.

Tel: +852-69486797

Fax: +852-31828508

Email: sales@sunkye.com

Website: www.sunkye.com

As a specialist in advanced military connectors china, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology. If you want to know more details or want a quotation , just feel free to contact us!

Sunkye combo connector series combines the size and weight advantages of a Micro -D connector with the added ability to handle higher power needs. Syunkye Combo D connector are widely used in different industries and equipment, such us Combined Charging System (CCS), satellite & weather stations, GPS receivers, transceivers and radio technology applications.

Features of Sunkye Combo Connectors:

combinations of .079 inch (2mm) power contacts and TwistPin signal contacts.

Hyperboloid socket applied in low-frequency contacts;

low insertion and extraction force;

Suitable for harsh environment, shock and vibration immunity.

Two guide pins are in different sizes, avoid is-operation.

Widely applied in aerospace, military and communication types of equipment. etc.

As a specialist in advanced mil spec connectors automotive, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology. If you want to know more details or want a quotation , just feel free to contact us!

For the connector industry practitioners, military style connectors should not be unfamiliar. We've all heard of military style connectors. Do you know how the function of military connectors works? The function of connectors in production is the function of connections. But in other industries, what relevant functions will military connectors play? Let's talk about this.

In the maintenance industry, especially in the automobile maintenance industry, the use of military style connectors will bring us a lot of help. In the process of maintenance, after using the connector, there is no need to worry about the other operation of the machine, and no need to worry about the other parts of the car stopping because of the repair.

Another function of connectors is that when military connectors are used, they will have different shape design requirements. Each type of connector will have its own application requirements. Of course, in actual use, we can also choose to use some connectors with shape requirements.

Military style connectors will always have different applications in different industries, but in the process of application are different, the main role of connectors in the production process is to connect different production parts. Military connectors play a simple connection role.

Sunkye is a manufacturer specializing in mil grade connector, connector design and production, devoted to connector design and development for more than ten years. It strives to become a leader in the industry, providing customers with competitive solutions and products.

As a specialist in advanced military connectors china, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology. If you want to know more details or want a quotation , just feel free to contact us!

PEEK connector, we also call it PEEK sealing terminal or HTHP connector, just as its name implies which the connector is made from PEEK material combining with metal contact and using glass sintered technology sealing PEEk material & contact so it has perfect air leakage performance. In wellhead, gate valve requires to PEEK terminal for sealing, or tubing head spool for connect gauge or control line of the outlet of the wellhead, and using on adapter spool for hydraulic control line terminated(C/L), electrical cable fit.PEEK connector, we also call it PEEK sealing terminal or HTHP connector, just as its name implies which the connector is made from PEEK material combining with metal contact and using glass sintered technology sealing PEEk material & contact so it has perfect air leakage performance. In wellhead, the gate valve requires to PEEK terminal for sealing, or tubing head spool for the connect gauge or control line of the outlet of the wellhead, and using on adapter spool for hydraulic control line terminated(C/L), electrical cable fit.

The working environment of the oil gas petrochemical industry always is harshness, dirty, high pressure, extreme temperature, chemical corrosion, low PH erosion, and various different kinds of gas. PEEK, benefits of physical performance with Pressure in 30,000PSI /207Mpa, the extreme temperature in 300℃, it satisfies for the special area and high-performance solutions.

PEEK melts at a relatively high temperature (343°C / 649.4°F) compared to most other thermoplastics. In the range of its melting temperature, it can be processed using injection molding or extrusion methods. It is technically feasible to process granular PEEK into filament form and 3D printing parts from the filament material using fused deposition modeling – FDM (or fused filament fabrication – FFF) technology. PEEK filaments have been demonstrated for producing medical devices up to class IIa. In its solid state PEEK is readily Machinable, for example, by (CNC) milling machines and is commonly used to produce high-quality plastic parts that are thermostable and both electrically and thermally insulating. Filled grades (30% Glass filled) of PEEK can also be CNC machined, but special care must be taken to properly manage stresses in the material. PEEK is considered a high-performance polymer, that is to say, its high price restricts its use to the most demanding applications only.

What is PEEK?

Polyether ether ketone (PEEK) is a colorless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications.

PEEK is a thermoplastic semicrystalline with excellent mechanical and chemical resistance properties that are retained to high temperatures. PEEK has a glass transition temperature of around 143 °C (289 °F) and melts around 343 °C (662 °F). That’s why PEEK seals and manifolds are commonly used in fluid applications. PEEK also performs well in applications where continuous high temperatures (up to 500 °F/260 °C) are common. It has high resistance to halogen, strong bronsted and Lewis acids, thermal degradation, biodegradation, Air leak: helium leak test ≤ 1× 10 -3 Pa.cm 3 /s

Because of its robustness, PEEK is used to fabricate items used in demanding applications, including bearings, piston parts, pumps, High-performance liquid chromatography columns, compressor plate valves, and electrical cable insulation. It is one of the few plastics compatible with ultra-high vacuum applications.

Beware of the difference of PEEK & PEK;

PEEK is Polyether ether keton & PEK is Polyether keton, both are very strong mechanical and chemical resistance properties but PEEk has one more molecule that means the physical performance more stability.