The selection of micro toggle switch depends on those points.
Release time：2018-10-09 Clicks： Click
The choice of micro-switch depends on those points, not very complicated, easy to see a few places on the specific details we will introduce to you below.
Micro-switching switches are widely used in many switching circuits, mainly responsible for the protection of control, precisely because it has such a function, so often used in electronic equipment or power systems, of course, some high-tech and other fields are indispensable. Therefore, we must not belittle its role, but without it, it will never work. So what determines the quality of the miniature toggle switch? What is its service life and how should it be judged?
The key to the quality of the micro-switch is the contact point between the shrapnel and the conductive parts.
The 1. contact should be the size (the bigger the better). There are mainly three kinds of contacts, silver nickel alloy and silver cadmium alloy. Silver-nickel alloy is an ideal contact material at present. It has good electrical conductivity and hardness, and is not easy to oxidize and rust. The silver-cadmium alloy contact of vibration switch is also good in other aspects, but the cadmium element belongs to heavy metal. On the one hand, cadmium is harmful to human body, on the other hand, the fusion of silver is not ideal. It will form small particles of cadmium metal on the contact surface, and may pull out the arc when conducting. Actually, it is not suitable to be used as a contact. The conductivity is really good, but the material is soft, and it is easy to oxidize the normally closed switch.
2. contact depends on the material. Touch switch housing material. The main switch brands on the market generally choose PC materials, impact resistance, blade switch high temperature resistance, not easy to discolor characteristics for the control of electrical switches is very important. The base of micro-switch is usually made of PC, and the fragments of micro-switch need to be equipped with beryllium bronze to prolong its life.
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