What do I need to pay attention to when choosing board-to-board connectors?

I. What do I need to pay attention to when selecting board-to-board connectors? Board to board connector internal metal end pin components are mostly composed of some plating parts, so generally in the connector storage package, be sure to seal the connector, do not directly exposed to air contact, otherwise the later connector will be affected by the humidity of the air, which leads to moisture oxidation of the components inside.1, observe the board to board connector load voltage can not exceed 50% of its rated voltage.2, to the board Connector mounting size for the plug, weld to the PCB on the length of the welding foot needs to be exposed to the PCB board segment is greater than 0.5mm. 3, higher precision board-to-board connectors, PCB space allows try to choose the model with a locating pin, convenient for the need to hand I welding operation. 4, see if there is a nerd-proof design. 5, whether the material used contains lead. 6, the touch resistance: a small volume of the board to the Board connectors, contact pressure is small, the use of lower current, lower voltage occasions, it is recommended that the use of gold-plated or silver-plated connectors, to avoid the film resistance generated by the impact of the signal. 7, pay attention to observe the board-to-board connectors in the connectors after the height of the PCB around the components of the welding height. The board's mating height must be greater than the welding height of the components around the PCB to ensure that there is a certain margin to ensure that there is no interference. Particular attention should be paid to the PCB after welding, may produce a higher error.

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