AF428 PNP Transistor

The AF428 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the AF428 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The AF428 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 AF428 transistor as follows.

AF428 Transistor Specification

Transistor Code		AF428
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.05W
Collector-Base Voltage (Maximum)	VCB	20V
Collector Current (Maximum)	IC	0.01A
Operating Junction Temperature (Maximum)	TJ	90°C
Emitter-Base Voltage (Maximum)	VEB	1V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	40MHz
Collector Capacitance	CC	8pF

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