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Resistors can be mainly classified as follows according to their shape, material, etc.
There are the following types and features of resistors, and they are used according to the application and purpose.
Chip (surface mount) resistor
The chip resistor is mounted on the surface of the board instead of through-holes (lead wires).
Compared to the lead-wire type, the chip resistor can be mounted on a smaller area.
There is a wide lineup of chip resistors, including anti-surge, high precision, and ultra-low resistance for shunts.
Carbon film resistor
The carbon film resistor is the resistor in which a carbon film is formed as a resistive element on the surface of a ceramic material (insulator), and the resistance value is adjusted by trimming it into a spiral shape. It is inexpensive and versatile, so it is widely used for general circuits.
Metal film resistor
The metal film resistor has the same structure as the carbon resistor but uses metals such as Ni-Cr for the resistive element.
Compared to the carbon resistor, the metal film resistor can be manufactured with better temperature characteristics and resistance value accuracy and have the advantage of less current noise.
Metal oxide film resistor
The metal oxide film resistor uses metal oxide such as tin oxide as the resistive element, and has excellent heat resistance, so it is often used for medium power applications of about a few watts.
Metal glaze film resistor
The metal glaze film resistor uses a mixture of metal and glass as the resistive element. Since a thick film is obtained, it is resistant to surges and pulses, and has excellent corrosion resistance.
Even in the high resistance range, there is little change in resistance value over time, making it highly reliable.
Wirewound resistor
The wirewound resistor has a structure in which resistance wire (heating wire) is wound around a ceramic material. It has relatively good temperature characteristics and can obtain a low resistance value, so it is used for current detection, etc.
Due to its structure, it has poor high-frequency characteristics, but there are also products to make up for the disadvantage by using non-inductive windings, etc.
