Patch matching recognition method

SMD components are small in size, light in weight, high in installation density, and strong in shock resistance. It has the advantages of strong anti-interference ability and good high frequency characteristics. It is widely used in computers, mobile phones, electronic dictionaries, medical electronic products, camcorders, electronic watt-hour meters and VCD players. SMD components can be divided into three types: rectangular, cylindrical and special-shaped according to their shape. According to the type, there are resistors, capacitors, inductors, transistors and small integrated circuits. The nominal method of SMD components is different from that of general components.

The following mainly talks about the nominal resistance method of chip resistors:

The resistance value of chip resistors is the same as that of general resistors and is marked on the resistor body. There are three kinds of resistance nominal methods, but the nominal method is different from general resistors.

Digital Nominal Method

(Generally rectangular chip resistors use this nominal method)

The digital cable position nominal method is to use three digits on the resistor body to indicate its resistance. The first two digits are significant digits, and the third digit represents the number of "0" added after the significant digits. No letters will appear in this one.

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