XA121 PNP Transistor

The XA121 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the XA121 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The XA121 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 XA121 transistor as follows.

XA121 Transistor Specification

Transistor Code		XA121
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO7
Collector Power Dissipation (Maximum)	PC	0.08W
Collector-Base Voltage (Maximum)	VCB	25V
Collector Current (Maximum)	IC	0.01A
Operating Junction Temperature (Maximum)	TJ	85°C
Emitter-Base Voltage (Maximum)	VEB	1V
Forward Current Transfer Ratio (hFE Value)		60
Transition Frequency	FT	20MHz
Collector Capacitance	CC	3pF

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