What is the impact of terminal selection and plating choice on connector performance?

As electronic equipment becomes lighter and more sophisticated, consumers have relatively high requirements for electronic connectors, including high reliability, small size, and fast data transmission performance. The most common convenience of electronic connectors is in circuits, connectors to circuit boards on circuit boards are useful to circuit board connectors, connectors to wires on vehicle wiring harnesses or wires to circuit board connectors, in addition to circuits, there are some places where connectors are needed for industrial equipment, vehicles, airlines, etc. The most important part of the electronic connector, and the terminal blocks of the contact part. This terminal block is equivalent to a small to medium-sized connector. Connecting certain devices with the same or different characteristics together enables certain components to work smoothly or current to flow smoothly. In this way, the whole device can work properly. Most of the raw materials of this terminal block are different. Due to the different performance and environmental effects of commonly used places, the selection fee may also be different. Some must be metal materials, some must be plastic, some must be liquid, and some must be solid. In conclusion, the choice depends on the details.

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Connector terminal coating is the key to ensure the stable application of electronic connectors. When choosing electronic connector terminal coating, it is important to consider the application of natural environment. Connector keys are divided into three conditions. For general use, tin plating is the most common. Tin is relatively cheap, but the material of tin is relatively soft. In order to ensure good contact, the contact force (at least 100 grams) must be very high, the plug frequency is generally very low, and it has only a simple defensive anti-corrosion effect, and it is effective. For high insertion frequencies, plating is usually required. For higher operating temperatures, other coatings such as 340 degrees, copper or brass nickel plating are required. In order to use small data signals with high reliability of connector terminals, the application of small contact force is stipulated. Electroplating is generally selected, and the corrosion resistance of gold is also very outstanding. Nickel is generally the lowest layer of electroplating, and most of the steel contacts are used for nickel plating (copper plating first). Tungsten is worse in electrical conductivity than gold and is mostly used instead of electroplating gold. Now the price of gold continues to rise, and there are more and more nickel-plated alloy products. Silver-plated contact points have good electrical conductivity, but silver air oxidation is very easy and can only be used in special circumstances.

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