Terminals are the parts that connect the battery with external conductors. In electrical engineering, the terminal refers to the terminal, also known as wiring terminals, types of single-hole, double-hole, jacks, hooks, etc., from the material points, copper silver-plated, copper galvanized, copper, aluminum, iron and so on. Their role is mainly to transmit electrical signals or conductive use. So, how to identify the good and bad terminals? Connector terminal manufacturer Dongguan Qunhua think you can start from the following 3 aspects:

1. Appearance

Good terminals should first have a good workmanship, visual inspection can not pass basically do not waste time to carry out electrical testing. So, what kind of terminal is considered good workmanship? The industry generally agreed that qualified terminal plastic parts should be the whole invisible change, the surface is flat, no scratches, no burrs on the edges, wall thickness uniformity; more importantly, the plug and the pin seat fit is high, there is no plugging and pulling force is too high and too low phenomenon occurs.

2. Material

First of all, the plastic parts, to have a very good flame retardant, that is, UL94V-0 flame retardant grade; simple test method that the open flame ignition, plastic parts away from the open flame extinguished that is, the terminal has a very good flame retardant properties; and then is the crimp frame, a lot of customers often say that the terminals copper or not is actually refers to the crimp frame. From the appearance of careful identification, copper frame than iron ore more angular texture, of course, the safest way or dismantle the plastic to take out the pressure frame for further testing, can not listen to the words of the sales staff.

3. Torque

The poor contact of 90% of the terminals on the market is due to the fact that the screw torque can not meet the requirements. Thus, it is best to personally use a screwdriver to feel whether the screws can press the wire tightly.

Dongguan Qunhua Precision Hardware Co., Ltd. is a professional customized connector PIN pins, four pins, MR16 pins, copper pins, and other industry connector pins of hardware products and hardware stamping strength of the manufacturers. 10 years, we focus on one thing: innovative R & D technology to the majority of connector manufacturers to provide qualified connector PIN pin products, and strive to become a stronger comprehensive strength of domestic We strive to become a strong comprehensive strength of the domestic hardware products and hardware stamping parts manufacturing service provider.