BF257S NPN Transistor

The BF257S is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF257S transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF257S 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 BF257S transistor as follows.

BF257S Transistor Specification

Transistor Code		BF257S
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO39
Collector Power Dissipation (Maximum)	PC	0.5W
Collector-Base Voltage (Maximum)	VCB	140V
Collector-Emitter Voltage (Maximum)	VCE	140V
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 BF257S NPN transistor. You can download the official BF257S 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

BFT28B PNP Transistor BCX21 NPN Transistor BC144 NPN Transistor BSV44A PNP Transistor 2SC627F NPN Transistor BFW69 NPN Transistor 2N6193 PNP Transistor CV7404 PNP Transistor GS112E PNP Transistor ASY76RT PNP Transistor 2SC1083F NPN Transistor 2N5414 NPN Transistor 2SC2822 NPN Transistor BCW78-16 NPN Transistor SD1127 NPN Transistor AFY11 PNP Transistor BFQ43S NPN Transistor 2SC497O NPN Transistor BC440-5 NPN Transistor MRF402 NPN Transistor