BOARD-TO-BOARD CONNECTOR DETECTION AND TROUBLESHOOTING

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1. Board-to-board connector test inspection:

1) Observe that the loading voltage on the board-to-board connector should not exceed 50% of its rated voltage.

2) The installation size of the board-to-board connector. For the plug-in header, the length of the soldering feet on the soldered PCB requires that the exposed part of the PCB board is greater than 0.5mm.

3) For board-to-board connectors with high precision, try to choose models with a little positioning when the PCB space permits, so as to facilitate the operation when manual soldering is required.

4) Check if there is a foolproof design

5) Check whether the material used in the board-to-board connector contains lead.

6) Small-size board-to-board connectors, low contact pressure, and low current and voltage applications, it is recommended to use gold-plated or silver-plated connectors to avoid the film resistance from affecting the signal.

7) Pay attention to observe the height of the board-to-board connector after mating, and whether it meets the welding height of the components around the PCB. The mating height must be greater than the soldering height of the components around the PCB and ensure that there is a certain margin to ensure that no interference occurs. Special attention should be paid to the possible height errors of the components after PCB soldering.

6. Board-to-board connection problems and common troubleshooting

Properly connecting the board-to-board connector products can increase the service life of the product and ensure the good operation of the mechanical equipment. Failure of board-to-board products and failure to deal with them in time will cause immeasurable economic losses. The following briefly introduces the connection and troubleshooting methods of the board-to-board connector circuit.

1) About the connection of the board-to-board connector

The board-to-board plug socket is used to electrically connect two separate circuit boards. It includes a first connector connected to the circuit board and an adapter connector used to connect the first connector in series, wherein the first connector has a first terminal connected with the circuit board and a body containing the first terminal. The adapter connector is provided with a second terminal and a body accommodating the second terminal. The two extended tail ends of the second terminal can be plugged and matched with the first terminal to achieve and respectively set on the two circuit boards. The electrical conduction of the first connector, wherein the end of one of the first terminal and the second terminal is provided with a reverse bending elastic part, and the body and the second terminal can be set according to the standard of the spacing of the circuit board. Choose a moderate extension length.

2) About board-to-board connector troubleshooting

Once the product fails, the cause can be judged to be the wire breakage during use, the product looseness, etc. The frequency of wire breaking in the middle is not much, most of them are broken at the connector, so the focus of inspection should be on the sensor and the wires in the connection to see if they have loosening and poor contact. Generally, open circuit failures caused by poor contact are mostly caused by rust at the end of the product, and external dirt enters the terminals or connection sockets, resulting in a decrease in contact pressure. To deal with this kind of failure, the connector needs to be removed, then re-plugged, and its connection status can be changed to restore normal contact.

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