KTX421U NPN Transistor

The KTX421U is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the KTX421U transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The KTX421U 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 KTX421U transistor as follows.

KTX421U Transistor Specification

Transistor Code		KTX421U
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		US6
Collector Power Dissipation (Maximum)	PC	0.15W
Collector-Base Voltage (Maximum)	VCB	15V
Collector-Emitter Voltage (Maximum)	VCE	12V
Collector Current (Maximum)	IC	0.5A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	6V
Forward Current Transfer Ratio (hFE Value)		270
Transition Frequency	FT	320MHz
Collector Capacitance	CC	7.5pF

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