AD149 PNP Transistor

The AD149 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the AD149 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The AD149 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 AD149 transistor as follows.

AD149 Transistor Specification

Transistor Code		AD149
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO3
Collector Power Dissipation (Maximum)	PC	27W
Collector-Base Voltage (Maximum)	VCB	50V
Collector-Emitter Voltage (Maximum)	VCE	30V
Collector Current (Maximum)	IC	3.5A
Operating Junction Temperature (Maximum)	TJ	100°C
Emitter-Base Voltage (Maximum)	VEB	20V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	0.2MHz

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