BD238 Bipolar Medium Power PNP Transistor – TO-126 Package

The BD238 is a silicon PNP medium-power bipolar junction transistor (BJT) designed for linear amplification and switching applications. With its high current capability, low saturation voltage, and robust TO-126 package, it is widely used in audio amplifier stages, power control circuits, voltage regulators, driver circuits, and industrial electronic applications.

Key Features -

• Medium-power PNP transistor

• Silicon epitaxial transistor technology

• Suitable for amplification and switching applications

• High collector current capability

• Low saturation voltage for efficient switching

• TO-126 package with good thermal performance

• Complementary transistor to BD237 NPN transistor

Specifications -

• Product type - Bipolar Junction Transistor (BJT)

• Part number - BD238

• Transistor polarity - PNP

• Technology - Silicon

• Package type - TO-126 (SOT-32)

• Mounting type - Through Hole

• Number of pins - 3

• Collector-Emitter Voltage (VCEO) - 80V

• Collector-Base Voltage (VCBO) - 100V

• Emitter-Base Voltage (VEBO) - 5V

• Maximum Collector Current (IC) - 2A

• Power Dissipation (PD) - 25W

• DC Current Gain (hFE) - 40 (minimum typical value)

• Transition Frequency (fT) - 3MHz

• Operating Temperature Range - -65°C to +150°C

Applications -

• Audio power amplifier circuits

• Medium-power amplifier stages

• Power supply circuits

• Voltage regulator applications

• Relay and solenoid driver circuits

• Motor control applications

• Complementary push-pull amplifier designs

• Industrial control electronics

• Educational and DIY electronics projects