PCB Components Guide

Resistors

Rx represents a resistor component.

Capacitors

Cx denotes a non-polar capacitor, typically used as an anti-interference capacitor at the power input.

Integrated Circuits

IC stands for an integrated circuit module. Ux refers to an integrated circuit component, also known as IC.

Test Points

Tx designates a test point utilized for factory testing.

Speakers and Buzzers

Spk1 represents a speaker component, such as a buzzer or a horn.

Transistors

Qx represents a triode, a type of transistor.

Capacitors

CEx signifies an electrolytic capacitor. CNx denotes an exhaust capacitance.

Connectors

CONx refers to a connector component.

Diodes

Dx stands for a diode.

Inductors

Lx indicates an inductor or magnetic bead.

LEDs

LEDx represents a light-emitting diode.

Crystal Oscillators

Xx denotes a crystal oscillator.

Thermistors

RTH is an abbreviation for thermistor.

Y and X Capacitors

CY signifies a Y capacitor, which is a high voltage ceramic capacitor adhering to safety regulations. CX represents an X capacitor, which is a high voltage film capacitor following safety regulations.

Zener Components

W represents a Zener component.

Switches

K designates a switch.

Crystals

Y refers to a crystal component.

Motherboard Components

R117 denotes a resistor on the motherboard, with its serial number being 17. T101 represents a transformer on the motherboard. SW102 stands for a switch component. LED101 indicates a light-emitting diode. LAMP refers to an indicating light. Q104(E,B,C) represents a transistor, with E denoting Emitter, B denoting Base, and C denoting Collector.