HP31A NPN Transistor

The HP31A is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the HP31A transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The HP31A 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 HP31A transistor as follows.

HP31A Transistor Specification

Transistor Code		HP31A
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO220
Collector Power Dissipation (Maximum)	PC	40W
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	5V
Forward Current Transfer Ratio (hFE Value)		10
Transition Frequency	FT	3MHz

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