2SD1221GR NPN Transistor

The 2SD1221GR is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SD1221GR transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SD1221GR 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 2SD1221GR transistor as follows.

2SD1221GR Transistor Specification

Transistor Code		2SD1221GR
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO251
Collector Power Dissipation (Maximum)	PC	1W
Collector-Base Voltage (Maximum)	VCB	60V
Collector-Emitter Voltage (Maximum)	VCE	60V
Collector Current (Maximum)	IC	3A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	7V
Forward Current Transfer Ratio (hFE Value)		150
Transition Frequency	FT	3MHz
Collector Capacitance	CC	70pF

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