In the custom electroplating of connectors, the gold-plating process plays an important role in the electroplating of connectors because the contact pairs have relatively high electrical performance requirements. At present, except for some strip connectors that adopt selective electroplating process, the holes of a large number of pinhole bulk items are still plated by barrel plating and vibration plating. In recent years, the volume of custom connectors is more and more miniaturized, the problem of gold plating quality in the holes of pinhole bulk items becomes more and more prominent, and the quality requirements of users on the gold layer have become higher and higher. Some users even have an extremely critical requirement for the appearance quality of the gold layer. In order to ensure the quality of gold-plated layers of connectors, the resolution of these common quality problems is always the key to improve the gold-plating quality of connectors. The causes of these quality problems will be discussed in the following part.
The abnormal color of the gold-plated layer
The problems are that the color of the gold-plated layer of the custom connectors is inconsistent with that of the normal gold-plated layer, or the color of gold-plated layers of different parts in the same supporting product is different. The reasons are as follows:
1. The influence of impurities in gold-plated raw materials
The color and brightness of the gold layer will soon be affected when the impurities brought in by the chemicals added to the plating solution exceed the tolerance level of the gold plating solution. If it is influenced by organic impurities, darkening and misty phenomena will occur on the gold-plated layer, and the darkening and misty position is not fixed when it is checked by Hull Cell coupon. If it is interfered by metal impurities, the effective range of current density will narrow down, and the Hull Cell test shows that the test coupon end with low current density does not shine, or the test coupon end with high current density does not shine and the test coupon end with low current density can not be plated. The plated layer shows red or even dark and the color change in holes is more obvious when the problem is reflected on plated connectors.
2. Excessive current density in gold plating
Due to the calculation error of the total area of the parts in the plating bath, the value is larger than the actual surface area, so that the gold-plating current flow is too large. Or the amplitude is too small when using of vibration electrogilding, so the crystallization on the gold-plated layers of all or part of the plated connectors in the plating bath is rough, and the gold-plated layer reddens visually.
SUNKYE TEACHES YOU HOW TO UNDERSTAND MICRO MINIATURE COAXIAL CONNECTORS
There are many kinds of micro miniature coaxial connectors: SMA, SMB, SMC, APC-7, K connector, etc. This article will give you an interpretation.
Whatever connector you use, either automotive grade connectors or defense connectors, you need to pay attention to its applicable frequency range before using it. The frequency range of the connector is limited by the first circular waveguide propagation mode in the coaxial structure. Reducing the diameter of the outer conductor will increase the maximum usable frequency. Filling the space with insulators reduces the maximum usable frequency and increases system losses. The performance of all connectors is affected by the quality of the connector interface. If the diameter of inner and outer conductors deviates from the design requirements, the quality of electroplating is poor, or the gap between the joints is large, the reflection coefficient and resistance loss of the interface will be reduced. This is why in the same kind of connector, the one with good quality, can be used at higher frequencies and has smaller standing wave coefficients.
If the circuit you need to measure and test is below 18GHz, you can choose SMA SMT connector, N connector and APC-7 connector. You can choose the specific type, according to your circuit type, cost and so on. If you have enough money, you can also use K connector, etc. If you measure and test in millimeter wave band, you can choose K connector or 2.4mm connector. Why not choose a 3.5 mm connector? Because compared with K-connector, it has neither price advantage nor performance advantage (the applicable frequency is not as high as K-connector).
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.
Super pin contacts is a typical miniature connector contacts, the minimum diameter is 0.254mm (0.01”).
Super pin contacts is an advanced and high performace solderless compression connector technology be repeated disassembly and maintenance, can keep the best connection of the electric current and microwave in the vibration environment.
Super pin contacts with high speed signal transmission, long service life, better adaptability etc. high performance and are widely applied in the fields of both military and industry.
High signal speed capability enabling frequencies greater than 40 GHz.
Application of Super pin contacts:
Super pin contacts can be widely used in weapons, satellite, missiles, space probe, aircraft, supercomputer, vacuum system, product testing system, IC(integrated circuit), unmanned aircraft system, UAS(Unmanned Aerospace Surveillance), jet fighter, radar array, crash-test, RF and high signal transmission etc.
As a specialist in advanced interconnects solutions, Sunkye has extensive experience in micro-miniature and nano miniature solutions based on the highly reliable Twist Pin contact technology, including:
Pigtail and PCB connectors, metal or plastic bodies, regular versions.
Solder cup connectors: metal or plastic bodies, regular or low profile.
Micro-D to MIL-DTL-83513 & Nano-D MIL-DTL-32139
Micro-strip, low current and saver connectors
Combo Micro-D connectors: making it possible to put higher power or RF signals through Micro-D connectors.
Hermetic connectors, typically used in the oil and gas industry, defense and scientific research.
Non-magnetic connectors for oil and gas, scientific research, space, and medical electronics.
Nano-D connectors (0.635 mm contact spacing) for extreme miniaturization.
Micro-D and Nano-D connectors specifically designed for space applications.
Micro-D circular connectors.
Mini Nano-D connectors (0.381 mm contact spacing) for Un-public system and application.
Sunkye International was originally developed in the early 1950s and was one of the Twist pin/ Micro D/Nano D connector companies to license this technology and improve it.
Sunkye International was one of the Twist pin connector/Micro D connector/Nano D connector companies to license this technology and improve it. Sunkye focuses on a fully automatic assembly connector’s technology and developing, until nowadays a totally of 14 lines are under manufacturing. Output capacity is 56.92secs/EA,369,000EA/Month.
Twist Pin Connectors with reduced pin spacing (less than 0.381mm) can save product design engineers much-needed PCB real estate. Sunkye answers the call with a series of Micro D (1.27*1.1mm) & Nano D (0.635*1.02mm) metric sockets and pins headers available in vertical and right angle configurations, with SMT and through-hole termination.
All Sunkye connectors are MIL-DTL compliant and are assembled with precision machined Beryllium copper (BeCu) twist pins assembled into high-temperature insulators. Through the combination of right angle pin headers plugged into vertical sockets, customers can create perpendicular mate configurations.
If you would like to learn more about how to utilize Sunkye connectors in your application, please feel free to contact us.
The NEW medium-short range conventional missile, early warning is difficult, intercept even more difficult. It’s a challenge of the connection performance of military-grade weapon systems.
Traditionally, the DF17, a “medium-short range conventional missile” with a range of more than 1,000 kilometers, has been listed as a strategic weapon.
It seems strange.
But actually — this is not nonsense.
In the 21st century, the distinction between traditional strategic and tactical weapons is blurring.
On the one hand, the b-52 and b-2 strategic bombers of the United States were heavily used for tactical missions and even considered has used trident D5 or minuteman 3 missiles to carry conventional warheads for tactical strike missions.
On the other hand, China is now heavily armed with precision strike medium – and long-range missiles with military grade connector that are increasingly strategic.
Because these missiles can destroy thousands of vital targets simultaneously in minutes — in other words, Could disable the U.S. military base in a matter of minutes, Such a strike would be as effective as a nuclear weapon. So these conventional missiles have strategic deterrence.
Currently, DF-26, DF-16, DF-15b, M-20 missiles, and the eagle-20 anti-ship missile under development are both “water drift missiles”, Russia “Iskander”, “Dagger”, and the first generation of hypersonic missiles developed by the U.S. army, navy and air force based on the army’s AHW, all belong to the category of “water drift bomb”.
“Drift bombs” are characterized by re-entry into the atmosphere (as “Iskander” is from the upper thin atmosphere into the relatively dense atmosphere),
The lift generated by the projectile body lifts the missile until it re-exudes the atmosphere, the warhead then re-enters the atmosphere and, after one or more hops, balances lift and gravity for a short period.
The phenomenon of a missile gliding at high speed with a very low rate of descent at a given altitude in the atmosphere. However, the glide section of the “water drift” missile is much shorter than that of the lifting body.
To achieve the “medium-short range conventional missile” weapon system, the connection system of Umbilical connector, Standard Military connector and Space connector, etc. SunkyeMilitary connector rectangle series including Micro D connectors & Nano D connector in the different mounting of crimping/soldering/PCB to PCB/SMT to meet with various system solution applications and terminal device.
For more information about speedy connector, please feel free to contact us!
SUNKYE MEDICAL CONNECTOR SOLUTIONS: FUNCTIONALITY OF MEDICAL DEVICES & INTERCONNECT WITH LIFE AND HEALTHCARE
Healthcare issues coming more highlight with the outbreak of COVID-19 in 2020. We have to ask a rational question worldwide. What’s the healthcare qualified standard? What’s the purpose of healthcare in medical equipment? To save more lives in the hospital or keep the running of the hospital?
Our medical-grade connectors are designed to support non-invasive devices and disposable components. Our dependable solutions are highly customizable for specific applications and are lightweight, high density, shielded, EMI & RFI resistant, and RF compatible in addition to being resistant to shock and vibration. Sunkye offers cable (including active optical and fiber optics), flexible circuit and printed circuit board assemblies (PCBA), and can fabricate complete chassis / box builds, power supplies and wiring harnesses.
Our fully custom medical connectors and cable assembly solutions are ideal for demanding medical and dental environments. When it comes to patient care, device functionality can be a matter of life and death. Sunkye medical grade connectors help you deliver reliable, high-performance electronic devices that improve and save patients’ lives. With a comprehensive range of connectivity solutions – including miniature, pulse current, sterilizable, reusable, hybrid, disposable, and silicone-coated options –, your devices will meet even the strictest requirements, without compromising on design.
As your partner in connectivity, we’ll help you reduce risk, comply with international standards, and develop safe, sleek devices that improve patient lives and outcomes.
Functionality & Environments of Sunkye Medical Grade Connector
SAFETY
Number coding, various locking systems, and easy-grip with the quality tactile feel
QUALITY
Sterilizable, chemical, and thermal resistance, right-angled and silicone over molds
PRECISION
Highly configurable and customizable, easy to handle, high-speed data transfer
Circle life
Up to 10,000 mating cycles
IP68 & IP69
EMI/RFI shielding
Medical Device Being Used In Clinical Lab
Performance index of R016 Sunkye Medical Grade Connector
Plug contact：rigid contact
No.of contact：12pins,16pins
Rated current ：2A
Insulation resistance ：≥5000 MΩ
Dielectric strength:500V
Contact resistance：≤10mΩ
Durability：50 Cycles
Working temperature ：-40℃～+85℃
Vibration：10 Hz～1500Hz，120 m/s 2
Mechanical Shock：980m/s2
Random vibration：Power spectral density 0.3 G2/Hz，Root-mean-square
Value of total acceleration：20.0
Connector Materials and Surface Treatment
Parts name
Materials
Surface Treatment
Pin
Copper alloy
Gold 2um
Housing
PPS
/
Environment Protect data (ROHS)
matter
Hg
Pb
Cr(VI)
PBB
PBDE
Cd
meet
or
exempt
meet
exempt
meet
meet
Sunkye is one of the best connector solutions ltd. We provide the connector you need.
For more information about d sub connector and medical interconnect, please feel free to contact us!
Micro miniature rf connectors, also known as RF connectors, are usually considered as components mounted on cables or instrumentation. They act as electrical connectors or separate components of transmission lines, mainly as bridges.
Compared with other electronic components, the development history of RF connectors is relatively short. In 1930, the earliest RF connector, UHF connector, was born. During World War II, due to the urgent need for war, with the development of radar, radio and microwave communications, there were medium-sized series of N, C, BNC, TNC, etc.
After 1958, SMA, SMB, SMC and other micro miniature rf connectors appeared. In 1964, the U.S. military standard MIL-C-39012 “General Specification for Radio Frequency Coaxial Connectors” emerged. Since then, RF connectors have begun to develop towards standardization, serialization and generalization.
Generally speaking, the main designation of general micro rf connectors is domestic and foreign. The main designation of special products is specified by detailed specifications, and how to standardize the use of symbols.
The model of general mil spec rf connectors is composed of two parts: the main name code and the structural form code, separated by a short horizontal line “-“. Other situations that need to be explained can be specified in the detailed specifications and separated by short transverse lines and structural form codes.
Sunkye is a qualified mil spec connectors 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.
Sunkye emi connectors is designed to meet stringent aerospace performance requirements. Each connector series is offered with standard low-pass Pi or C filter arrays, or with customized filters to meet specific frequency and capacitance requirements. Thermally conductive epoxy protects the filter package from mechanical and heat stress and also provides a waterproof seal. All filtered receptacles are intermateable with standard plugs and connector savers, and each respective family of military style electrical connectors is supplied with a range of shell styles in both environmental and hermetic configurations.
Sunkye Filter Micro-D connectors are low-pass filters, transmitting DC and low frequency signals while attenuating unwanted high frequency noise. These connectors are available with C filter elements or Pi filters. The filter substrates are constructed with a ceramic planar capacitor array.
Sunkye Filter Micro-D’s meet the demandingperformance requirements of MIL-DTL-83513, except for a reduction in the dielectric withstanding voltage rating to 250 volts DC (higher voltages available on request). The Twist Pin contact system assures superior performance in the most demanding applications.
C Filter Connectors
This type of military grade electrical connectors has single capacitor with low self-inductance. This configuration is generally used to attenuate high frequency signals. The simple design allows high-frequency EMI to discharge to ground via the surrounding electromagnetic field. C filters occupy the least amount of space and offer lower cost compared to other filter types.
Pi Filter Connectors
Dual capacitors with a ferrite inductor positioned between them. The Pi filter provides excellent high-frequency performance due to its sharper roll off.
With the development of the Unmanned technology, more and more UAV/UUVs/USV/UGV s are used in modern military operations, and some even predict that UAV/UUVs/USV/micro UGV will likely become the dominant force in air operations in the 21st century.
UAV/UUVs/USV/UGVs have the characteristics of compact structure, strong concealment, flexible maneuverability, low cost, and easy to use. They are mainly used in battlefield reconnaissance, electronic jamming, carrying cluster bombs, guided missiles, and other weapons to perform offensive missions, and used as air communication relay platform, nuclear test sampler, nuclear explosion and nuclear radiation reconnaissance aircraft, etc. The size of UAV ranges from a large wingspan of 40 meters to palm drones as small as 16 cm and weighs only 18 grams. More and more types of drones have been developed and put into application. There are higher autonomous mobility and size requirements about UAV, no doubt that connectors play an increasingly important role in the design process. The application fields of Sunkye UAV connectors include:
UAV Power & Control Systems
UAV Guidance Systems
Inertial Navigation Systems (INS)
Global Navigation Satellite Systems (GNSS)
Thermal or Visual Cameras
Airborne Radar Systems (solar, communication, surveillance, etc.)
Laser Scanners
UAV Ground Control Station (GSC)
Although there are now advanced reconnaissance and strike integrated drones, 80% of UAVs are still reconnaissance drones, which determines that a large part of military drones will develop in the future in a smaller size. The smaller size, lighter weight, and excellent adaptability to various extreme environments give Sunkye connectors performance that exceeds the requirements of military drones:
Size and Volume: Micro-D and Nano-D connectors can meet light and miniaturize demand
Weight: 0.3g~5g
Spacing of Contacts: 0.635 mm/1.27 mm/2.54 mm
Superior Electrical Transmission Performance: Twist Pin contact, which is top technology in the world
EMC: 360° EMC shielding
Vibration: 10HZ~2000HZ 196 m/s²
Shock: 980 m/s² 6ms
High Temperature: -55℃~+125℃
Waterproof Seal: IP67/IP68
Low Current: 1A~3A
Under the unmanned application solutions in Aviation/Ground Radar/Military Ground Vehicles and Communications/Navy Coast Guard/ Space/Satellites/Sub sea/Oil Gas and Commercial Industry, Sunkye microstrip connector R013 & R068 series products provide an integrated mounting for it. Benefit the ultra-small & narrow size and weight, high-frequency, 1.27 mm*1.1 mm space in 1 row and 2 rows design. With stable signal and electrical transform and with latch or W/O for choose.
R013 Micro Strip Connector with Latch
Twist pin contacts, high density interconnection.
Equivalent to Airborn M series buckle connector
Twist pin contacts, high density interconnection
With locking buckle, connector can be locked and separate
The sectional area of cable core:0.1 mm²- 0.15 mm²
The receptacle with guide pin
Meet MIL-C-83513 standard, lightweight connectors
Currently, there are more than 200 types of UAV in the world, and there will be more in the future. Sunkye can produce custom connectors to meet different types and functional design requirements of drones.
Drones are consumables to a certain extent, and in order to adapt to the rapidly changing application environment, the cost control of connectors and fast delivery time are very important. As a connector manufacturer company with 70 years of professional experience, Sunkye can meet these two requirements very well.
For more information about military connectors, please feel free to contact us!
The Wet-pluggable underwater connector needs a new revolution The Deepwater technical- Sunkye subsea connector achieved up to 210MPa With Sunshine’s exploration of deep-water oil and gas resources &underwater production systems have been widely used. One of the main modes of deep-water oil and gas field development.
The underwater connector is located in the last layer of the cross-production management system and the main connection facility of the underwater control system.
The underwater production system includes underwater wellheads, Christmas trees, manifolds, jumpers, underwater control systems, umbilical cables, and subsea pipelines.
It can realize the connection of the crossover pipe and the Christmas tree, the pipeline terminal (PLE), and other facilities. Therefore, the underwater connector is one of the core key equipment for deepwater oil and gas resource development.
In the early drilling of shallow-water oil and gas fields, the connection of underwater equipment usually adopted a bolt-flange connection system, which relied on divers to complete. With the continuous development of deep-water oil and gas fields, the flange connection system is harder to benefit for the project application, so the Diverless Connection System coming. The non-submersible connection system relies on ROV (Remotely Operated Vehicle) to complete the connection of underwater connectors. After nearly 100 years of development, the peak period of shallow-water oil and gas exploration and development has passed, and the water storage volume and total volume have gradually shifted to deep water.
At present, more companies have mastered the exploration technology of underwater connectors, and worldwide subsea connectors come from companies with experience in production.
Internationally, oil and gas resources in sea areas with a water depth of more than 300 meters are generally defined as deep water oil and gas, and those with a water depth of more than 1,500 meters are referred to as ultra-deep water.
From the perspective of development areas, the exploration and development activities of deep-water oil and gas by oil companies are concentrated in the following areas:
The 1st Brazil’s subsalt oil reservoir, which is also a relatively concentrated area of deep-water oil and gas development projects with good economic efficiency;
The second is the “ultra-deepwater area”, including the seas of West Africa, the Gulf of Mexico, offshore Brazil, the northwestern shelf of Australia, the eastern Mediterranean, the Bay of Bengal, and the South China Sea;
The third is the deep-water basin group around the Arctic;
The fourth is the deep-water basin group in the western Pacific Ocean.
With the application of new technologies, new equipment, and new materials for oil and gas exploration and development, deepwater oil and gas exploration will inevitably develop in the direction of visualization, digitization, and steep development in the future. Also demanding more stable supply and exploration engineering support. Sunkye Deep Water Sealing Connector Series can work perfectly as oil and gas connectors that can be applied for the project solutions and proposal prototype.
Sunkye Deep Water Sealing Connector
Type: Glass sintering adapter with single contact
Material: high temperature alloy and fluororubber shell, alloy contact, ceramic, glass and rubber insulator.
Technical Characteristics Of Sunkye Underwater Connector
【Mechanical Performance】
Random vibration:10Hz-2000Hz, 0.3G2/Hz, acceleration 20G, 175℃ .4h on direction X, Y, Z.
Normal temperature insulate resistance:≥5000MΩ (500VDC,normal-tem.)
High temperature insulate resistance: ≥500MΩ (500VDC, 200℃ )
Rated current: 1A continuous current
【Environmental Performance】
Temperature range: -55℃ to +200℃
Operating pressure: 1 MPa to 140MPa
High temperature life: 200℃ ,600h
Temperature shock: -55℃ to +200℃ , 15 cycles, the temperature switching time is ≤ 15 min
Salt spray: 48h
Air leak: helium leak test ≤ 1×10-3Pa.cm3/s
High temperature high pressure:140 MPa, 200℃, 10h
Materials Expertise Second to None
In-house materials research and development capabilities for elastomers, plastics, and meta
Extensive experience with a wide range of materials and products to provide optimal solutions
Fully equipped labs enable complete pre-production material and process validation
Rigorous Analysis and Testing
Finite Element Analysis (FEA) to support qualified HPHT solutions
In-house testing capabilities for extreme pressures and temperatures and chemical compatibility and rapid gas decompression testing to meet industry standards
Custom-Engineered Solutions
Experienced design and applications engineering staff works directly with customers from concept to delivery
Comprehensive seal system designs that deliver high-performance and ease of installation
Sealing system designs combine various seal geometries with specially developed HPHT materials
Robust sealing systems for pressures exceeding 30,000 psi and temperatures in excess of 300℃
Only seal solution provider able to offer elastomeric, thermoplastic, metal to metal and high integrity connector,
CMM dimensional verification with Real time data collection plus remote monitoring & Logs of temperature and pressure profiles during the testing
Sunkye is uniquely qualified to deliver turnkey custom solutions and mil 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. You’ll find a large selection of popular Mil-Spec military connectors such as MIL-DTL-83513 micro connector, MIL-DTL-38999 iii connector, MIL-DTL-32139 nano connector, MIL-DTL-26482 automotive connector, d sub connector, micro-d connectors, and more, available in standard or custom configurations of mil connector.
sunkye 