Basic performance of the connector

The basic performance of connectors can be divided into three categories: mechanical, electrical, and environmental.

Mechanical behavior

Mechanical properties In terms of the connection function, the insertion force is an important mechanical property. The insertion force is divided into the insertion force and the extraction force (the extraction force is also called the separation force), and the requirements of the two are different. There are maximum insertion force and minimum separation force regulations in the relevant standards, which indicates that the insertion force is small from the point of view of use (thereby having a low insertion force LIF and a structure without ZIF insertion), and if the separation force is too small, It will affect the reliability of the contact.

Another important mechanical property is the mechanical life of the connector. Mechanical life is actually an indicator of durability, which is called mechanical operation in GB5095. It takes one insertion and one extraction as one cycle to judge whether the connector can complete its connection function (such as contact resistance value) after the specified insertion and removal cycle. The insertion force and mechanical life of the connector are related to the plating quality (sliding friction coefficient) of the contact structure (positive pressure) contact portion and the dimensional accuracy (alignment) of the contact arrangement.

Electrical performance

The main electrical properties of electrical performance connectors include contact resistance, insulation resistance and electrical strength.

1 Contact resistance High quality electrical connectors should have low and stable contact resistance. The contact resistance of the connector ranges from a few milliohms to tens of milliohms.

2 Insulation resistance is an indicator of the insulation performance between electrical connector contacts and between the contacts and the casing, in the order of hundreds of megaohms to several gigaohms.

3 Resistance to electric strength, or withstand voltage, dielectric withstand voltage, is the ability to characterize the rated test voltage between connector contacts or between contacts and housing.

Environmental performance

Environmental performance Common environmental properties include temperature resistance, moisture resistance, salt spray resistance, vibration and shock.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connector, circular connector, agricultural connector and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(Overview of Military Standards for RF Cables and Connectors).

Overview of Military Standards for RF Cables and Connectors

Many coaxial cable and connector types are available in the RF and microwave industry designed for specific purposes and applications; compatibility with other RF microwave components is achieved with universally accepted cable and connector standards. The US Department of Defense (DOD) develops standards for materials, facilities, engineering, and testing practices in order to improve military operational readiness and reduce costs and production time. DOD standards have adopted non-government standards and practices that meet DoD performance requirements. This process is managed by the Defense Standardization Program who provides the standards and relevant specifications. RF cables and connectors used in military applications have demanding requirements for environmental specifications, such as temperature, shock, and vibration; these requirements are specified in detail the US Department of Defense military standards in MIL-DTL-17J for coaxial cables and MIL-PRF-39012 RF for coaxial connectors.

Department of Defense Standards (DoD)

The Acquisition Streamlining and Standardization Information System (ASSIST) database is a list of defense and federal standardization documents as well as adopted non-government standards (NGS), and Materiel International Standardization Agreements (ISAs).

MIL-DTL-17

Coaxial cables for military and aerospace applications must meet the standards and specifications in MIL-DTL-17 which details specifications for flexible and semi-rigid coaxial cables with solid and semisolid dielectric cores as well as single, dual, twin, and triaxial conductors intended for use in radio frequency applications.

MIL-PRF-39012

Coaxial connectors for military and aerospace applications must meet the standards and specifications in MIL-PRF-39012 which provides general requirements and test methods for RF connectors used with flexible and semirigid coaxial cables.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(What is the use of automotive connectors).

Common faults in automotive connectors

The automotive connector consists of contacts, housings, insulators, and other accessories that act as bridges in the car’s wiring to allow the vehicle’s internal circuitry to circulate. Once a problem occurs inside the connector, the overall line is not circulated. Therefore, the connector manufacturer recommends that corrections be made in time if problems are found.

Common automotive connector problems can be divided into the following points:

1. Problems with the connector material of the car connector. The raw materials of the automotive connector connector can affect the performance and other unstable performance. Therefore, if the automotive connector material purchased at the time of purchase is inferior, the connector is prone to problems when it is used.

2. The current and voltage of the automotive connector circuit are unstable. Current and voltage problems are external factors that can be stabilized by installing products such as voltage regulators.

3. The car connector is not used within the regulations. Automotive connector products have their own environment, such as the general heat resistance between 40 ~ 120 ° C, the insertion force is below 20.5 kg. Once the operating conditions are out of the rated range, it is easy to cause problems with the connector.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(Where'd OBD II come from).

Where'd OBD II come from

To combat its smog problem in the LA basin, the State of California started requiring emission control systems on 1966 model cars. The federal government extended these controls nationwide in 1968.

Congress passed the Clean Air Act in 1970 and established the Environmental Protection Agency (EPA). This started a series of graduated emission standards and requirements for maintenance of vehicles for extended periods of time. To meet these standards, manufacturers turned to electronically controlled fuel feed and ignition systems. Sensors measured engine performance and adjusted the systems to provide minimum pollution. These sensors were also accessed to provide early diagnostic assistance.

At first there were few standards and each manufacturer had their own systems and signals. In 1988, the Society of Automotive Engineers (SAE) set a standard connector plug and set of diagnostic test signals. The EPA adapted most of their standards from the SAE on-board diagnostic programs and recommendations. OBD-II is an expanded set of standards and practices developed by SAE and adopted by the EPA and CARB (California Air Resources Board) for implementation by January 1, 1996.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(What constitutes RF coaxial connector reliability).

What constitutes RF coaxial connector reliability

Reliability refers to receiving the expected levels of performance from a cable assembly every time it is used, without degradation or loss in performance for the full lifetime of the application. Failure of a cable assembly can be expected when it exceeds the mechanical or electrical or environmental limits set for it, such as forming a flexible cable into a bend radius smaller than the recommended minimum or applying RF/microwave power levels higher than the rated maximum or operating the cable assembly at temperatures exceeding the specified operating temperature range. The definition of reliability becomes more complex when limits are set for performance degradation that is acceptable over time, and the performance of a coaxial cable assembly can be described by many different parameters, such as insertion loss, VSWR, and phase stability.

The reliability of a cable assembly may be linked to maintaining tight control on just one or two performance parameters or on a full set of parameters. The required tolerances for what describes a hi-rel cable assembly can differ from one application to another. For example, a variation of ±2 dB in insertion loss over certain temperature and frequency ranges may constitute excellent reliability for a system requiring ±3 dB insertion-loss stability but may result in the failure of a system requiring ±0.5 dB insertion-loss stability. The reliability of a coaxial cable assembly is very much a function of an application and its operating environment.

The reliability of cables and connectors for military and aerospace applications is guided by many different military standards, such as MIL-DTL-17 coaxial cables and MIL-PRF-39012 RF coaxial connectors. MIL-DTL-17 covers many different applications, operating environments, and sets of performance specifications for different coaxial cables, with a great deal of attention paid to the center conductor dimensions and the materials chosen for the center conductor, such as tin, silver-coated copper, and copper-clad steel conductors.

Coaxial connectors for military and aerospace applications must often meet the standards contained within MIL-PRF-39012, which is used by all departments and agencies of the U. S. Department of Defense (DoD). It covers general requirements and test methods for characterizing RF connectors used with flexible and semirigid coaxial cables for military applications, and applies to many different types of connectors, including field-serviceable and non-field-serviceable connectors.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

What should I pay attention to when designing USB Type-C?

Today's USB type-c standard has gradually become the mainstream of USB connector interface. The production design and development of smarter connectors, plug interfaces and USB cables are the issues and development directions that connector manufacturers need to pay attention to. USB type-c The range of applications that the standard can provide is also increasing, and the rules of this series are continuing to evolve. Such a solution can be connected without separate power adapter data and power transmission, and is widely used in portable devices, data centers, infotainment systems, and outdoor LED display devices. Therefore, engineers need to pay attention to three key design points when designing USB Type-C connectors.

power supply

It is critical that the USB Type-C connector cable sends and receives the right amount of power and requires the correct components. A suitable resistor and a system for leveling power will ensure that the cable consumes only the same amount as the host device. Electrical energy.

Multi-function signal transmission

The USB Type-C standard also requires cables to use precise wire sizes and the correct connector construction. Proper signal integrity, as well as protection against RF and electromagnetic interference, allow the multifunction signal to work effectively. Vendors with some USB Type-C connector solutions can provide a shield design on the back of the socket housing to help eliminate unwanted electromagnetic interference (EMI) leakage.

Sturdy structure

Enhanced retention and splash-proof options should be provided during product design to ensure that USB Type-C connectors can operate in harsh industrial environments, which requires enhanced environmental sealing and mechanical strength. For beginners, the IEC-60529-IP67 specification ensures a joint seal to prevent ingress of dust and is protected by high pressure water jets. It also supports immersion in water for a limited time.

On the other hand, the rugged construction of the USB Type-C connector can be done with upgraded materials such as gold-plated and nickel-plated contacts to prevent corrosion. Design features such as conductive silicone rubber gaskets and threaded panel connection points also allow the connector to operate in extreme environments, and the USB Type-C connector also features through-hole mounting for a mechanically robust PCB connection.

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(What are the advantages of the circular connector).

What are the advantages of the circular connector

In the process of production of circular connectors, after repeated research by technicians, the production process has been gradually improved, and in the process of assembly, the device process of electronic products has been gradually simplified, and the batch production process is also Continuous simplification. In addition, when the device is in use, there is an accident or some kind of electronic component failure, if the device uses the connector, the component of the component can be replaced relatively quickly, and thus the advantages of the circular connector are also It is easier to repair. 

With the continuous development of modern technology, the components of the equipment are relatively easy to fall behind. If the device is installed with a connector, the update of the device is more convenient, which is of great help to maintain our equipment and production. 

When designing and manufacturing new products, professional engineers can use the latest system of component parts. At this time, the flexibility of the connector can be realized, and the flexibility of product design can be effectively improved. In short, it is precisely because of the obvious advantages of the circular connector, therefore, in the construction machinery industry, the concept of this circular connector has been widely used, automotive parts production lines, electrical and electrical systems, instrumentation, minerals, Oil and gas drilling and anti-corrosion engineering wind energy and solar energy, etc., as well as automated substations and other fields have been widely used, more and more meet customer needs, and have been loved by customers. 

Yeahui is a connector supplier with 11 years of experience in developing high quality connectors and wiring harnesses. wo have many types of products, including obd connectors, circular connectors, agricultural connectors and so on.We can meet the requirements of various customers. Feel free to learn more about connectors or buy our connectors,looking forward to your message.

Read more about the connectors(Improve the durability of fiber optic connectors).