TK259A NPN Transistor

The TK259A is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the TK259A transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The TK259A 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 TK259A transistor as follows.

TK259A Transistor Specification

Transistor Code		TK259A
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.3W
Collector-Emitter Voltage (Maximum)	VCE	12V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	150°C
Forward Current Transfer Ratio (hFE Value)		20
Transition Frequency	FT	150MHz

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