An active device is any type of circuit component with the ability to electrically control electron flow (electricity controlling electricity). In order for a circuit to be properly called electronic, it must contain at least one active device. Components incapable of controlling current by means of another electrical signal are called passive devices. Resistors, capacitors, inductors, transformers, and even diodes are all considered passive devices.
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We are an expert manufacturer specialized in rectifier diodes and bridge rectifier. Now we could produce diodes from STD, FR, HER, SF, UF, TVS , SMD, Zener, Schottky, Switching and 0.5A - 50A, MB,MBF,ABS,WOB, KBL, KBP, KBU, GBL, KBPC, DIP bridge rectifier.