2ST2121 PNP Transistor

The 2ST2121 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2ST2121 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2ST2121 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the 2ST2121 transistor as follows.

2ST2121 Transistor Specification

Transistor Code		2ST2121
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	250W
Collector-Base Voltage (Maximum)	VCB	250V
Collector-Emitter Voltage (Maximum)	VCE	250V
Collector Current (Maximum)	IC	17A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	6V
Forward Current Transfer Ratio (hFE Value)		80
Transition Frequency	FT	25MHz

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