What are the reliability test items of connectors? Third party testing organization

Date：2022-08-10 18:13:40Views：981

Connector forms and structures are ever-changing. There are various types of connectors with different application objects, frequencies, power, and application environments. Its function is to build a communication bridge between the blocked or isolated circuits in the circuit, so as to make the current flow and realize the predetermined function of the circuit. Connectors are indispensable components in electronic equipment. One or more connectors will always be found when observed along the current flow path. Then, what are the reliability test items of connectors? This paper has collected and collated some materials, and I hope that it can be of great reference value to all readers.

The following factors shall be considered for the reliability of connectors:

a. Materials for connector product design and product manufacturing;

b. Operating environment;

c. The application environment of functional requirements, especially temperature, humidity, corrosion, etc., determines which failure mechanisms will work, while the functional requirements of connectors determine the allowable failure degree.

Understand the reliability of connectors, and generally conduct various tests on connectors. The tests generally involve the following items: plugging force test, durability test, insulation resistance test, vibration test, mechanical impact test, cold and hot impact test, mixed gas corrosion test, etc. Specific test items are as follows:

（1） Plugging force test

Purpose: to verify whether the plug-in force of the connector meets the product specification requirements;

Principle: fully insert or pull out the connector according to the specified rate, and record the corresponding force value.

（2） Durability test

Objective: To evaluate the influence of repeated plugging and unplugging on the connector and simulate the plugging and unplugging status of the connector in actual use.

Principle: continuously plug and unplug the connector at the specified rate until the specified number of times is reached.

（3） Insulation resistance test

Purpose: to verify whether the insulation performance of the connector meets the requirements of circuit design or whether its resistance value meets the requirements of relevant technical conditions when it is subjected to environmental stress such as high temperature and humidity.

Principle: voltage is applied to the insulation part of the connector, so that leakage current is generated on the surface or inside of the insulation part to show the resistance value.

（4） Withstand voltage test

Objective: to verify whether the connector can work safely under rated voltage and can withstand over potential, so as to evaluate whether the insulation material or insulation gap of the connector is suitable

Principle: apply the specified voltage between the contact parts of the connector and between the contact parts and the shell for the specified time, and observe whether the sample has breakdown or discharge.

（5） Contact resistance test

Purpose: to verify the resistance value generated when the current flows through the contact surface of the contact. The principle is to measure the voltage drop at both ends of the connector by applying the specified current to the connector

（6） Vibration test:

Objective: to verify the effect of vibration on the performance of electrical connector and its components.

Vibration type: random vibration, sinusoidal vibration

（7） Mechanical impact test

Objective: to verify the impact resistance of the connector and its components or evaluate whether the structure is firm;

Test waveform: half sine wave, square wave.

（8） Cold and heat shock test

Objective: To evaluate the effect of the connector on its functional quality under the rapid large temperature difference.

（9） Combined cycle test of temperature and humidity

Objective: To evaluate the effect of connectors stored in high temperature and humidity environment on the performance of connectors.

（10） High temperature test

Objective: To evaluate whether the terminal and insulator performance change after the connector is exposed to high temperature environment for a specified time.

（11） Salt spray test

Objective: To evaluate the salt spray corrosion resistance of connectors, terminals and coatings

（12） Mixed gas corrosion test

Objective: To evaluate the corrosion resistance of the connector exposed to different concentrations of mixed gases and its effect on its performance

The above is related to the reliability test items of the connectors compiled by the core testing team. I hope it will be helpful to you. Chuangxin testing is a professional testing institution for electronic components. Currently, it mainly provides testing services for integrated circuits such as capacitors, resistors, connectors, MCU, CPLD, FPGA and DSP. Specializing in functional testing of electronic components, incoming appearance testing of electronic components, anatomical testing of electronic components, acetone testing, X-ray scanning testing of electronic components, and RoHS component analysis testing. Welcome to call, we will serve you wholeheartedly!