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YAGEO agent teaches you to identify the nominal method of chip resistance
- Author:YAGEO
- Release on:2021-02-21
SMD components have small size, light weight, high installation density and strong 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 typeYAGEOResistors, capacitors, inductors, transistors and small integrated circuits, etc. The nominal method of SMD components is different from that of general components.
The following is mainly to understand the nominal method of resistance of YAGEO chip resistors:
YAGEOThe resistance of chip resistors and generalYAGEOResistors, inYAGEOMarked on the resistor body. There are three kinds of resistance nominal methods, but the nominal method is not exactly the same as general resistors.
Digital Nominal Method
(Generally rectangularYAGEOChip resistors use this nominal method)
The Nominal Method of Digital PositioningYAGEOThree digits are used on the resistor to indicate its resistance. Its first and second digits are significant digits, and the third digit indicates the number of "0"s added after the significant digits. No letters will appear in this one.
For example: "472'" means "4700Ω"; "151" means "150Ω". If it is a decimal, use "R" to mean "decimal point". It occupies one significant digit, and the remaining two are significant digits.
For example: "2R4" means "2.4Ω"; "R15" means "0.15Ω".
Color wheel nominal method (representation of wafer resistor and plug-in resistance)
YAGEOSMD resistors are the same as general resistors. Most of them use four rings (sometimes three rings) to indicate their resistance. The first ring and the second ring are significant numbers, and the third ring is the magnification. For example: "brown green black" means "15Ω"; "blue gray orange silver" means "68kΩ" error ±10%.
E96 number code and letter mixed nominal method
YAGEOThe number code and letter mixed nominal method of chip resistor related pictures also uses three digits to indicate the resistance value, that is, "two digits plus one letter", and the two digits represent the E96 series resistance code. Its third digit is the magnification expressed by the letter code. For example: "51D" means "332&TImes;103; 332kΩ"; "249Y" means "249&TImes;10-2; 2.49Ω".