Board-to-board connector testing and how to deal with faults: Board-to-board connectors are common in the current electronics market, mainly used in communications network equipment, industrial automation equipment, medical equipment, office equipment, and so on. If you are not a professional technician, how to test the board-to-board connector and how to deal with the fault, we may not know about it. Then, let's talk about the board-to-board connector test and how to deal with the fault.

The board-to-board connector is for electrically connecting two mutually separated circuit boards, including a first connector that is connected to the circuit board and a switch connector for serially connecting the first connector, wherein the first connection The device is provided with a first terminal that is connected to the circuit board and a body that houses the first terminal. The adapter connector is provided with a second terminal and a body for accommodating the second terminal. The two extended ends of the second terminal can be respectively mated with the first terminal to achieve a first connection with the two circuit boards respectively. The electrical connection of the device, wherein the end of one of the first terminal and the second terminal has an elastic portion that is reversely bent, and the body and the second terminal can be selected according to the spacing requirement of the circuit board. Extension length.

1. Since the board-to-board connector works, current generates heat at the contact point, causing temperature rise. Therefore, it is generally considered that the operating temperature should be equal to the sum of the ambient temperature and the junction temperature rise. The maximum temperature rise allowed for the board-to-board connector at rated operating current is specified.

2, the intrusion of moisture-resistant moisture will affect the insulation performance of the connection h, and rust metal parts. The constant damp heat test conditions are relative humidity of 90%~95% and temperature of +40±20°C. The test time is more stringent according to the product regulations and the alternating damp heat test.

3. When the salt spray resistant connector works in an environment containing moisture and salt, the metal structural parts and the surface treatment layer of the contact part may cause galvanic corrosion, which may affect the physical use and electrical performance of the board-to-board connector.

When the board-to-board connector has an open circuit failure, it may be caused by broken wires during use, poor connector contact, and loose connector terminals. Since the failure of the wire to break in the middle is very rare, it is mostly disconnected at the connector. Therefore, the inspection should focus on carefully checking the sensor and the wire connecting the cable, if there is looseness and poor contact. The board-to-board connector disconnection failure caused by poor contact is often caused by corrosion of the connector end, external dirt entering the terminal or connecting to the socket, thereby causing a decrease in contact pressure. At this point, just remove the board-to-board connector and re-install it to change its connection and return it to normal contact.

1. The voltage applied to the board-to-board connector should not exceed 50% of its rated voltage.

2. Mounting dimensions for the board connector For the insertion of the header, the length of the soldering leg soldered to the PCB is required to expose the portion of the PCB board to be larger than 0.5 mm.

3. For the board-to-board connector with tight precision, try to use the model with positioning pin when the PCB space allows, which is convenient for manual welding.

4. Is there a foolproof design?

5. Whether the material used in the board-to-board connector contains lead.

6. Small-size board-to-board connectors, where the contact pressure is small, and when using low current and voltage, it is recommended to use gold-plated or silver-plated connectors to avoid the influence of the film resistance.