BC128 NPN Transistor

The BC128 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BC128 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BC128 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the BC128 transistor as follows.

BC128 Transistor Specification

Transistor Code		BC128
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		U21
Collector Power Dissipation (Maximum)	PC	0.1W
Collector-Base Voltage (Maximum)	VCB	25V
Collector-Emitter Voltage (Maximum)	VCE	20V
Collector Current (Maximum)	IC	0.05A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		150
Transition Frequency	FT	20MHz
Collector Capacitance	CC	40pF

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