![]() ![]() Generally, the first letter identifies the device category, such as R for resistor, C for capacitor, D for diode and Q for three-stage tube. The serial Numbers of R107, C118, Q102 and D202 are often seen on the circuit board. In addition, CEx- electrolytic capacitor, CNx- discharge (multiple capacitors together), RNx- exclusion, CONx- connector, Dx- bond, Hx- hole, JPx-Jumper, Lx- inductor/bead, LEDx- light emitting Diode, Xx- crystal oscillator.Įach manufacturer has his component library, the component that when drawing circuit diagram is pulled from library (big factory), to a few unusual, for instance CON, JP, each manufacturer definition also can differ somewhatĬY(Y capacitor: high voltage ceramic capacitor, safety gauge)ĬX(X capacitor: high voltage film capacitor, safety gauge) The component library definitions of Y1XXX vary from vendor to vendor ![]() Kx is? The component library definition varies from vendor to vendor Rx is the resistance, there’s a lot of resistance in the circuit diagram, R1, R2…Ĭx is non-polar capacitance, anti-interference capacitance of power input ![]()
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