As we all know, resistor is a common component in our work and life. It is generally known as resistance and is a current-limiting component. In principle, it is connected to the resistance in the circuit, the resistance value of the resistor is fixed, generally two pins, which can limit the current through its connected branches.
There are many types of resistors, suitable for different scenarios. Among them, thick film chip resistance and thin film chip resistance is difficult to distinguish many people. We often have friends to consult us, what is the film chip resistance and film chip resistance, what is the difference between them, are applicable to which industries? Today, let's look at the details.
Wafer resistors are also called thick film wafer resistors, chip resistors or metal film resistors, which are named by the thickness, shape and material of the film layer.
General common domestic patch resistance naming method:
1, 5% accuracy of the name: RS-05K102JT
2, 1% accuracy of the name: RS-05K1002ft
R - stands for resistance
S - stands for power
05 - Represents size (in inches)
K - indicates a temperature coefficient of 100PPM
J - means 5% accuracy, F- means 1% accuracy
The difference between thick film and thin film resistors is the thickness of the film. That's not how it works!
Thick and thin film chip resistors are named for the different process characteristics they represent. For example, thick film chip resistors are made by using screen printing, masking the paste and resistance paste on the insulating board, making the corresponding pattern, and then heating it. Thin film resistors are made by evaporation and sputtering, which are very different in nature. Because of this, thick film and thin film resistors have different characteristics and uses.
Thick film resistance is generally used in television switching power supply, or audio systems and other power amplifier circuits, because its common accuracy is ±1%, ±5%, ±10%, poor accuracy, and the temperature coefficient is usually relatively large, not good control.
On the contrary, the film resistance can achieve ±0.10%, ±0.1%, etc., the accuracy is better, the temperature coefficient can reach ±5ppm, the resistance value is also more stable and reliable, is used in power supply, power equipment, instruments and meters and other products.