How to Read Resistors on PCBs: Codes and Checks
To read a resistor on a PCB, first identify the marking method. Through-hole resistors usually use color bands. SMD resistors usually use numbers, letters, or no visible marking.The marking can show resistance, multiplier, tolerance, and sometimes temperature coefficient. However, PCB assembly teams should also check it against the BOM, schematic, reference designator, package size, placement […]