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IC BD139 NPN Transistor Complementary Low Voltage Transistor

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IC BD139 is a NPN complementary low voltage NPN transistor in 3 pin SOT-32 package. This device is designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits.

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IC BD139 is a NPN complementary low voltage NPN transistor in 3 pin SOT-32 package. This device is designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits.

The BD139 transistor can have a current gain of 40 to 250. The gain of the BD139 will be in the range from 40 to 100, for the BD139 it will be in the range from 63 to 160, for the BD139 it will be in the range from 100 to 250.

A Bipolar NPN transistor like BD139 is available in the SOT-32 plastic package. This kind of transistor is used in different electronic circuits because of less cost and high collector current. This transistor can drive upto 1.5A loads like motors, high power LEDs, relays, etc.

The VCE (collector-emitter) & VCB (collector-base) voltage is also extremely high thus it can simply use in an electronic circuit. The dissipation current of the collector terminal is 12.5W which is ideal to utilize in audio amplifier circuits. This transistor’s saturation voltage is simply 0.5V.

Generally, we can provide a maximum of 80V across two terminals like emitter and collector. Once we detach the current supply at the base terminal of this transistor, then it will turn off, so this situation is known as the cut-off region.

TRANSISTOR NPN BD139 is the best choice if you are looking for a transistor with medium power in a plastic package. BD139 transistor was manufactured by Phillips for specific audio applications at 160 MHZ, but it was cloned by different manufacturers like ST, Samsung, etc.

Features

  • Plastic casing NPN Transistor
  • Continuous Collector current (IC) is 1.5A
  • Collector-Emitter voltage (VCE) is 80 V
  • Collector-Base voltage (VCB) is 80V
  • Emitter Base Breakdown Voltage (VBE) is 5V
  • DC current gain (hfe) is 40 to 160
  • Available in To-225 package

IC BD139 NPN Transistor Applications

  • RF Amplifiers
  • Switching circuits
  • Amplification circuits
  • Audio amplifiers
  • Load driver circuits

IC BD139 NPN Transistor Pin Configuration

Number Name Description
1 Emitter Current Drains out through emitter, normally connected to ground
2 Collector Current flows in through collector, normally connected to load
3 Base Controls the biasing of transistor, Used to turn ON or OFF the transistor.

 

BD139 Transistor Pinout

BD139 Transistor Pinout

Where to use BD136 Transistor

Being a Medium Power NPN Transistor with a collector current of 1.5A this transistor can be used to control (On/Off) bigger loads that consume less than 1.5A. It also has a very less saturation voltage (Base Emitter Voltage VBE) of only 5V, this makes it easy to use this IC in digital electronics which has an operating voltage of 5V.

Another peculiar fact about this transistor is that it comes in plastic package, while most medium power transistor are available only in metal can package. This reduces the cost of the Transistor and also since the package is not conductive it will not be affected by other noise in the circuit. Due to this feature this transistor is widely used in amplifier applications.

So if you are looking for a medium power NPN transistor in Plastic package then this Transistor might be the right choice for you.

Datasheet: –

datasheetspdf.com/…293281/Toshiba/BD139/1

Package: –

1 x IC BD139 NPN Transistor Complementary Low Voltage Transistor

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IC BD139 NPN Transistor Complementary Low Voltage Transistor
IC BD139 NPN Transistor Complementary Low Voltage Transistor

 15.00  10.00

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