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2SD1991 NPN Transistor

The 2SD1991 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SD1991 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SD1991 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 2SD1991 transistor as follows.

Circuit diagram symbol of the 2SD1991 transistor

2SD1991 Transistor Specification

Transistor Code 2SD1991
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package SOT33
Collector Power Dissipation (Maximum) PC 0.4W
Collector-Base Voltage (Maximum) VCB 30V
Collector Current (Maximum) IC 0.1A
Operating Junction Temperature (Maximum) TJ 150°C
Forward Current Transfer Ratio (hFE Value) 40

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