Do you know the basic structure of the resistor?

The resistance consists of the following:

1. Substrate substrate materials generally use 96% aluminum oxide ceramics. In addition to good electrical insulation, the substrate should also have excellent thermal conductivity at high temperatures. Electrical properties and mechanical strength characteristics.

2. The resistive film is printed on a ceramic substrate with a resistor paste having a certain resistivity and then sintered. The resistance paste is generally made of hafnium dioxide.

3, the electrode is to ensure that the resistor has a good weldability and reliability, generally adopt three-layer electrode structure: inside. in. Outer electrode.

4, the protective film The protective film is covered on the resistive film, mainly to protect the resistor body. On the one hand, it plays a role of mechanical protection. On the other hand, it makes the surface of the resistor body insulative, which prevents the resistor from coming into contact with the adjacent conductor and causing failure. During the process of crossing the middle electrode, it is also possible to prevent the erosion of the resistance film by the electric flux and cause the resistance performance to decline. The protective film is generally a low-melting glass paste.