In the design of electronic connectors, pin headers are an extremely important part. Because it is often the key to the conduction of the entire connector-the contact. The stability and safety of the pin header are related to the quality of the entire connector. Therefore, we must pay attention to the various precautions of the pin headers when producing in the factory.
1. Heat dissipation design. The pin header connector will heat up when it is working, and the high temperature will affect the attenuation speed and stability of the LED, so the heat dissipation of the PCB board and the ventilation and heat dissipation of the box will affect the connector.
2. Check the anti-static performance. Check whether the pin header connector has good anti-static measures.
3. The smaller current value supported by the pin header connector is 20mA. Generally, it is recommended that the maximum current used is no more than 80% of the nominal value. Especially for electronic equipment with small dot spacing, due to poor heat dissipation conditions, it should be Reduce the current value.
4. Control the verticality of the board and the needle. For in-line pin header connectors, sufficient process technology must be available to ensure that the LED is perpendicular to the PCB board when passing the furnace.
5. Pass the wave soldering temperature and time. Strictly control the temperature and time of wave front welding. Generally, the preheating temperature is 100℃±5℃, and the highest is not more than 120℃, and the preheating temperature must rise steadily. The soldering temperature is 245℃±5℃. The soldering time is generally recommended not to exceed 3 seconds.
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