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BF494 NPN Medium Frequency Transistor 20V 30mA TO-92 Package

7.00 + GST

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BF494 is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.


• Advanced process technology

• Low error voltage

• Fast switching speed

• Full-voltage operation

• High power and current handling capability


Transistor Polarity PNP
Collector-Base Voltage (VCBO) 30V
Collector-Emitter Voltage (VCEO) 20V
Emitter-Base Voltage (VEBO) 5V
Continuous Collector Current (IC) 30mA
Collector-Emitter Saturation Voltage (VCE(sat)) 0.2V
Base-Emitter Saturation Voltage (VBE(sat)) 0.92V
DC Current Gain (hFE) 67-222
Operating Temperature Range -55 – 150°C
Power Dissipation (PD) 350mW


* product image for illustration purposes only. actual product may vary.


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