2SC1991 NPN Transistor

The 2SC1991 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SC1991 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SC1991 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 2SC1991 transistor as follows.

2SC1991 Transistor Specification

Transistor Code		2SC1991
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO92
Collector Power Dissipation (Maximum)	PC	0.625W
Collector-Base Voltage (Maximum)	VCB	60V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		170
Transition Frequency	FT	125MHz
Collector Capacitance	CC	1.5pF

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