Connector Inspection

Connector inspection

The basic structure of the connector

Connectors are parts of electronic equipment that connect circuits to transmit current and are irreplaceable. The basic structure of the connector can be divided into four parts: contact, insulator, shell, and accessories.
Contact: It is composed of a male contact and a female contact, and the electrical connection is completed through the insertion of the male and female contacts. The contact is the core part of the connector, which mainly plays the role of electrical connection.
Insulator: It can arrange the contact pieces according to the required position and spacing, and ensure the insulation performance between the contact pieces and between the shell and the contact pieces. Insulators are also called pedestals and mounting plates, which require insulating materials to have good insulation resistance, withstand voltage performance, and ease of processing.
Shell: As the outer cover of the connector, it mainly provides mechanical protection for the built-in insulating mounting board and pins.
Accessories: There are two kinds of structural accessories and installation accessories. Structural accessories, clamp rings, connecting rings, cable clamps, positioning pins, guide pins, sealing rings, gaskets, etc.; installation accessories-screws, nuts, screws, spring rings, etc.

With the development of society and technological progress, connectors are playing an increasingly important role in various fields. In order to ensure their safety, durability and other performance, it is essential to test connectors. Generally speaking, the testing standards for connectors mainly include insertion and removal force, insulation resistance, durability, withstand voltage, contact resistance, vibration, and mechanical shock. The details are as follows:

1. Connector insertion force test.

2. Connector insulation resistance test

3. Connector durability test.

4. Connector withstand voltage test.

5. Connector contact resistance test.

6. Connector vibration test.

7. Connector mechanical shock test.

Connector product inspection

Connector product inspection requirements mainly cover appearance, quality and performance.

1. Structure size: There are certain requirements for the shape and size of the shape, and the connection of the connector has space restrictions. For example, the single-board connector cannot contact other parts, so the inspection of the structure size is the most important.

2. Reliability: The reliability of the connecting parts is related to the signal connection strength of the connector, and the reliability is a necessary inspection item for the performance inspection of the connector.

3. Shielding: The shielding effect of the connector has also been paid more and more attention. The shielding effect can be achieved by connecting the metal shell of the connector with the shielding layer, or wrapping the plug part of the connector with copper, and the shielding layer of the cable The copper sheets are welded together to act as a shield.

4. Versatility: When choosing connectors, try to choose general objects, which can reduce supply risks and costs, and reduce material types.

5. Durability: The durability of the connector is reflected in its ability to adapt to complex environments. Common inspection indicators include high temperature resistance, low temperature resistance, salt spray resistance, and corrosion resistance.

6. Impedance matching: The RF signal of the connector has high requirements for impedance matching. Impedance mismatch will cause signal reflection and affect signal transmission.