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2N1991S PNP Transistor

The 2N1991S is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N1991S transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N1991S 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 2N1991S transistor as follows.

Circuit diagram symbol of the 2N1991S transistor

2N1991S Transistor Specification

Transistor Code 2N1991S
Transistor Type BJT
Transistor Polarity PNP
Transistor Material Silicon(SI)
Package TO5
Collector Power Dissipation (Maximum) PC 0.6W
Collector-Base Voltage (Maximum) VCB 30V
Collector-Emitter Voltage (Maximum) VCE 20V
Collector Current (Maximum) IC 1A
Operating Junction Temperature (Maximum) TJ 175°C
Forward Current Transfer Ratio (hFE Value) 15
Transition Frequency FT 40MHz
Collector Capacitance CC 45pF

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