How to buy board-to-board connectors?

The board-to-board connector is the connection between the board end and the board end. For example, some connectors belong to the board-to-board connector. Now the competition in the electronic component market is fierce. From the earliest FPC connector to the withdrawal of the board-to-board connector specifications and models, it seems that the demand for connectors in the field is still quite large. However, it is found that we are only interested in the earliest FPC connection, and we do not know much about what to pay attention to when choosing and purchasing board-to-board connectors and how to connect them. Here is how to choose and connect board-to-board connectors. Board-to-board connector selection notes. 1.Observe that the voltage applied to the board-to-board connector does not exceed 50% of its rated voltage. 2. Installation size of the board connector For the plug-in header, the length of the solder pin soldered to the PCB shall be greater than 0.5mm when the PCB is exposed. 3. For the board-to-board connector with high precision, the model with positioning pins shall be selected as far as possible when the PCB space permits, so as to facilitate the operation when manual welding is required. 4. Whether there is fool-proof design. 5. Whether the materials used contain lead. 6. Contact resistance: The board-to-board connector with small volume has small contact pressure. It is recommended to use gold-plated or silver-plated connectors when using low current and voltage, so as to avoid film resistance affecting the signal. 7. Observe whether the height of the board-to-board connector after mating meets the soldering height of the components around the PCB. The fitting height must be greater than the welding height of the components around the PCB, and ensure that there is a certain margin to ensure that there is no interference. Special attention should be paid to the possible height error of components after PCB soldering. The board-to-board connector is used for electrically connecting two circuit boards which are separated from each other, and comprises a first connector connected with the circuit boards in a conducting way and an adapter connector connected with the first connector in series, wherein the first connector is provided with a first terminal connected with the circuit boards in a conducting way and a body for accommodating the first terminal. The adapter connector is provided with a second terminal and a body for accommodating the second terminal, two extending ends of the second terminal can be respectively inserted and matched with the first terminal so as to achieve electrical conduction with the first connectors respectively arranged on the two circuit boards, wherein the end of one of the first terminal and the second terminal is provided with an elastic part which is bent reversely, And the proper extension length of the body and the second terminal can be selected according to the distance setting requirement of the circuit board. Board-to-board connector fault handling When the board-to-board connector has an open circuit fault, it may be caused by broken wires, poor connector contact and loose connector terminals. Since it is very rare for the conductor to be disconnected in the middle, most of them are disconnected at the connector. Therefore, during the inspection, the conductor at the sensor and the connector should be carefully checked for looseness and poor contact. The open circuit fault of board-to-board connector caused by poor contact is often due to the corrosion of the connector end and the entry of external dirt into the terminal or connection socket, resulting in the reduction of contact pressure. At this time, just remove the board-to-board connector and reinstall it to change its connection condition and restore its normal contact.

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