Identification method 1: distinguish according to the temperature coefficient of resistance
We can distinguish between the carbon film resistors having a negative temperature coefficient characteristic, and the metal film resistors have a small positive temperature coefficient so that the two resistors can be distinguished well;
Identification method 2: judge according to the accuracy of resistance
The manufacturing process of each resistor is different, and the accuracy of the resistor is also different. We know that the carbon film resistor is a very common resistor, its accuracy is generally not high, and the metal film resistor production requirements are higher and the resistance accuracy is higher than the carbon film resistor. A lot higher, by the judgment of the accuracy of the resistance is also a recognition method;
Identification method three: through resistance color recognition;
Our common carbon film resistors are mostly khaki or pink due to their low precision and low production cost. The appearance of metal film resistors is mostly blue. We can clearly distinguish these two colors. Kind of resistance
Identification method 4: distinguish resistance according to resistance painting;
The carbon film resistor has a black protective paint on the surface. We can distinguish it by looking at the color of the protective paint. The metal film resistor usually uses a bright white protective film. We can also carry out the coating by the protection of these two resistors;
In summary, the methods for distinguishing between metal film resistors and carbon film resistors are better judged. However, with the advancement of resistance technology and the more intelligent production process, some resistance identification methods need to be adjusted and improved. Manufacturers perform comparisons to better identify the resistance.
