BF257B NPN Transistor

The BF257B is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF257B transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF257B 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 BF257B transistor as follows.

BF257B Transistor Specification

Transistor Code		BF257B
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO39
Collector Power Dissipation (Maximum)	PC	0.5W
Collector-Base Voltage (Maximum)	VCB	220V
Collector-Emitter Voltage (Maximum)	VCE	220V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		25
Transition Frequency	FT	55MHz
Collector Capacitance	CC	7pF

UXPython is not the creator or an official representative of the BF257B NPN transistor. You can download the official BF257B NPN transistor datasheet to get more infromation about this transistor.

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

More Transistors Datasheets in TO39 Package

2SC959 NPN Transistor BSY71 NPN Transistor 2SC555D NPN Transistor 2SC589N NPN Transistor 2SC1386H NPN Transistor MM3220 NPN Transistor 2SC2808 NPN Transistor 2SC484R NPN Transistor MM4646 PNP Transistor CL21 NPN Transistor GS121B PNP Transistor 2N5407X PNP Transistor BFT28C PNP Transistor BF259 NPN Transistor RCA1A17 NPN Transistor 2SC507Y NPN Transistor GF760 PNP Transistor BSV69 NPN Transistor 2N4897X NPN Transistor FT1324 NPN Transistor