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BD139 Datasheet PDF – 80V, 1.5A, NPN Transistor – ST

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This is one of the transistor types.

Part Number: BD139

Description

80V, 1.5A, Complementary Low Voltage Transistor

Package: SOT-32 Pin

Manufacturer: STMicroelectronics

Image

BD139 image st

 

Description

These epitaxial planar transistors are mounted in the SOT-32 plastic package. They are designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits. The NPN types are the BD135 and BD139, and the complementary PNP types are the BD136 and BD140, BD139.

Absolute maximum ratings ( Ta=25°C )

BD139 Datasheet PDF

Features

1.  Products are pre-selected in DC current gain

Application

2. General purpose

BD139 Pinout

BD139 pinout

 

BD139 Datasheet PDF


 

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BF494 Datasheet PDF – NPN Frequency Transistor – NXP

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Part Number: BF494

Function: NPN Medium Frequency Transistor

Package:  TO-92, SOT-54 Package

Manufacturer: Philips, NXP

Image

BF494 NPN transistor

Description

This is 20V, 30mA, NPN Transistor.

This is NPN medium frequency transistor in a TO-92, SOT54 plastic package.

 

Pinout

BF494 datasheet pinout
Features

1. Low current (max. 30 mA)
2. Low voltage (max. 20 V).

 

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 30 V

2. Collector to Emitter Voltage: Vceo = 20 V

3. Emitter to Base Voltage: Vebo = 5 V

4. Collector Current: Ic = 100 mA

5. Total Device Dissipation: Pd = 350 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C

 

Applications

1. HF applications in radio and television receivers
2. FM tuners
3. Low noise AM mixer-oscillators
4. IF amplifiers in AM/FM receivers.

 

BF494 Datasheet


 

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