BF121 NPN Transistor

The BF121 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF121 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF121 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 BF121 transistor as follows.

BF121 Transistor Specification

Transistor Code		BF121
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO7
Collector Power Dissipation (Maximum)	PC	0.33W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	30V
Collector Current (Maximum)	IC	0.025A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	175MHz
Collector Capacitance	CC	O.2pF

UXPython is not the creator or an official representative of the BF121 NPN transistor. You can download the official BF121 NPN transistor datasheet to get more infromation about this transistor.

Note : Copyrighted materials belong to their creator or official representative.

More Transistors Datasheets in TO7 Package

AF146 PNP Transistor 2N1264-13 PNP Transistor 2S97 PNP Transistor OC82 PNP Transistor 2SA135 PNP Transistor 2SB268 PNP Transistor 2SA290 PNP Transistor 2N247 PNP Transistor BF279 NPN Transistor 2N2207 PNP Transistor 2N25 PNP Transistor 2SB199 PNP Transistor TA1662 PNP Transistor 2SAB38 PNP Transistor BF125 NPN Transistor TA1659 PNP Transistor GC508 PNP Transistor 2SA134 PNP Transistor OC202 PNP Transistor GC519 PNP Transistor