PMMT491A NPN Transistor

The PMMT491A is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the PMMT491A transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The PMMT491A 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 PMMT491A transistor as follows.

PMMT491A Transistor Specification

Transistor Code		PMMT491A
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		SOT23
Transistor SMD Code		9A*_9Ap_9At_9AW
Collector Power Dissipation (Maximum)	PC	0.25W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	40V
Collector Current (Maximum)	IC	1A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		300
Transition Frequency	FT	150MHz
Collector Capacitance	CC	10pF

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