Different application objects and frequencies correspond to different connectors
Connectors are a component that our electronic engineering technicians often come into contact with. Its role is to bridge the communication between the blocked or isolated circuits in the circuit, so that the current flows, so that the circuit achieves the intended function. Connectors are an indispensable part of an electronic device. You will always find one or more connectors along the path through which the current flows. The form and structure of the connector are ever-changing. There are various types of connectors depending on the application object, frequency, power, and application environment.
But no matter what kind of connector, the current should be ensured to flow smoothly and continuously.
In general terms, the connection of the connector is not limited to current. In today's rapid development of optoelectronic technology, in the optical fiber system, the carrier that transmits the signal is light, and the glass and plastic replace the wires in the ordinary circuit, but the optical signal Connectors are also used in the vias, which function the same as circuit connectors. This shows that the reliability of the connector is very important. If the performance indicators of the connector can not meet the relevant expectations, a series of problems will be extended later, which will have various effects on your application.
The reliability of the connector is considered as follows:
A, connector product design and product manufacturing materials;
B, operating environment;
C. The environment in which the function requires application, especially temperature, humidity, corrosivity, etc., determines which own failure mechanism will work, and the requirements of the connector function determine what degree of failure is allowed.
Understand the reliability of the connector, generally perform various tests on the connector. The test generally involves the following items: insertion force test, durability test, insulation resistance test, vibration test, mechanical impact test, thermal shock test, Mixed gas corrosion test, etc. The specific test items are as follows:
(1) Insertion force test
Purpose: To verify whether the plugging force of the connector meets the product specifications;
Principle: The connector is fully inserted or pulled out at a specified rate, and the corresponding force value is recorded.
(2) Insulation resistance test
Purpose: To verify whether the insulation performance of the connector meets the requirements of circuit design or when subjected to high temperature, humidity and other environmental stresses, whether the resistance value meets the requirements of relevant technical conditions.
Principle: A resistance value is applied by applying a voltage to an insulating portion of a connector to cause a leakage current to be generated on the surface or inside of the insulating portion.
(3) withstand voltage test
Purpose: To verify whether the connector can work safely at rated voltage, and whether it can withstand the potential of overpotentials, thereby assessing whether the connector insulation or insulation gap is appropriate: between the connector contacts and the contacts, the contacts and A specified voltage is applied between the outer casings for a predetermined period of time to observe whether the sample has breakdown or discharge.
(4) Contact resistance test
Purpose: To verify the resistance value generated when current flows through the contact surface of the contact. Principle: By measuring the current through the connector, the voltage drop across the connector is measured to obtain the resistance value.
(5) Vibration test:
Purpose: To verify the effect of vibration on the performance of electrical connectors and their components.
Vibration type: random vibration, sinusoidal vibration
(6) Mechanical impact test
Purpose: To verify the ability of the connector and its components to withstand impact or to assess its structural integrity;
Test waveform: half sine wave, square wave.
(7) Thermal shock test
Purpose: To evaluate the effect of the connector on its functional quality under rapid large temperature differences.
(8) Salt spray test
Purpose: To evaluate the salt spray resistance of connectors, terminals and coatings
But no matter what kind of connector, the current should be ensured to flow smoothly and continuously.
In general terms, the connection of the connector is not limited to current. In today's rapid development of optoelectronic technology, in the optical fiber system, the carrier that transmits the signal is light, and the glass and plastic replace the wires in the ordinary circuit, but the optical signal Connectors are also used in the vias, which function the same as circuit connectors. This shows that the reliability of the connector is very important. If the performance indicators of the connector can not meet the relevant expectations, a series of problems will be extended later, which will have various effects on your application.
The reliability of the connector is considered as follows:
A, connector product design and product manufacturing materials;
B, operating environment;
C. The environment in which the function requires application, especially temperature, humidity, corrosivity, etc., determines which own failure mechanism will work, and the requirements of the connector function determine what degree of failure is allowed.
Understand the reliability of the connector, generally perform various tests on the connector. The test generally involves the following items: insertion force test, durability test, insulation resistance test, vibration test, mechanical impact test, thermal shock test, Mixed gas corrosion test, etc. The specific test items are as follows:
(1) Insertion force test
Purpose: To verify whether the plugging force of the connector meets the product specifications;
Principle: The connector is fully inserted or pulled out at a specified rate, and the corresponding force value is recorded.
(2) Insulation resistance test
Purpose: To verify whether the insulation performance of the connector meets the requirements of circuit design or when subjected to high temperature, humidity and other environmental stresses, whether the resistance value meets the requirements of relevant technical conditions.
Principle: A resistance value is applied by applying a voltage to an insulating portion of a connector to cause a leakage current to be generated on the surface or inside of the insulating portion.
(3) withstand voltage test
Purpose: To verify whether the connector can work safely at rated voltage, and whether it can withstand the potential of overpotentials, thereby assessing whether the connector insulation or insulation gap is appropriate: between the connector contacts and the contacts, the contacts and A specified voltage is applied between the outer casings for a predetermined period of time to observe whether the sample has breakdown or discharge.
(4) Contact resistance test
Purpose: To verify the resistance value generated when current flows through the contact surface of the contact. Principle: By measuring the current through the connector, the voltage drop across the connector is measured to obtain the resistance value.
(5) Vibration test:
Purpose: To verify the effect of vibration on the performance of electrical connectors and their components.
Vibration type: random vibration, sinusoidal vibration
(6) Mechanical impact test
Purpose: To verify the ability of the connector and its components to withstand impact or to assess its structural integrity;
Test waveform: half sine wave, square wave.
(7) Thermal shock test
Purpose: To evaluate the effect of the connector on its functional quality under rapid large temperature differences.
(8) Salt spray test
Purpose: To evaluate the salt spray resistance of connectors, terminals and coatings
(9) Wire Swing Test
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