AF121S PNP Transistor

The AF121S is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the AF121S transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The AF121S 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 AF121S transistor as follows.

AF121S Transistor Specification

Transistor Code		AF121S
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO1
Collector Power Dissipation (Maximum)	PC	0.105W
Collector-Base Voltage (Maximum)	VCB	32V
Collector-Emitter Voltage (Maximum)	VCE	32V
Collector Current (Maximum)	IC	0.01A
Operating Junction Temperature (Maximum)	TJ	75°C
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	270MHz
Collector Capacitance	CC	0.6pF

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