BD238 TO-126 Transistor – KSH 10 at HIMA TRONICS Mombasa – Top quality transistors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
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BD238 TO-126 Transistor

SKU: HMJ842 Category: Transistors
KSH 10.00
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Product Description

BD238 TO-126 Transistor (PNP)

= 2A PNP Medium Power Transistor for Audio and Switching Applications =

The BD238 is a mediumpower PNP bipolar junction transistor (BJT) housed in a TO126 (SOT32) plastic package. It is designed as a complementary device to the NPN transistor BD237. This transistor is wellsuited for use in driver stages of audio amplifiers and general-purpose power switching applications.

Device Type: PNP Bipolar Junction Transistor (BJT)
Package: TO126 (SOT32)
Maximum Collector Current (IC): -2A
NPN Complement: BD237
Ensure correct pin identification: Pin 1 is the Emitter, Pin 2 is the Collector, and Pin 3 is the Base. The collector is electrically connected to the metal mounting tab.
Do not exceed the maximum ratings to prevent permanent damage.

= Key Technical Specifications =

ParameterValueNotes
------
Collector-Base Voltage (VCBO)-100V
Collector-Emitter Voltage (VCEO)-80VMaximum continuous voltage
Emitter-Base Voltage (VEBO)-5V
Collector Current (IC)-2AContinuous current rating
Power Dissipation (Ptot)25WAt case temperature of 25°C
DC Current Gain (hFE)40 minAt IC = 150mA, VCE = 2V
Transition Frequency (fT)3 MHzTypical value
Operating Junction Temperature150°CMaximum

= Key Features =

Complementary PNP Design - Designed as a complementary transistor to the BD237 (NPN)

High Voltage Capability - 80V VCEO and 100V VCBO for power applications

High Current Capability 2A continuous collector current for mediumpower applications

Low Saturation Voltage 0.6V maximum at IC = 1A ensures low conduction losses

== Applications ==

  • Driver stages in audio amplifiers
  • General-purpose power switching circuits
  • Power regulators
  • Motor controllers
  • Switching power supplies
Reliable Performance - Designed for driver stages in audio amplifiers and power applications
Widely Available Standard TO126 package with well-documented specifications

√ Ready to use A standard and welldocumented power transistor

√ Medium power capability - Suitable for a wide range of applications

= Package Includes =

  1. 1x BD238 PNP Transistor (TO-126 Package)
For reliable operation, ensure adequate heatsinking when dissipating significant power
This device is available in hFE ranking variants. The BD238-16 is a common variant with a higher hFE range
For a lower voltage variant, consider the BD234 (VCEO of 45V) or BD236 (VCEO of 60V)
For precise pin identification, the standard TO-126 configuration is Emitter (1), Collector (2), Base (3).
This transistor is also available in a throughhole TO225 package, which shares the same electrical characteristics.

Avoid exceeding the maximum voltage ratings the collectoremitter voltage (VCEO) of 80V is critical

-Avoid exceeding the maximum junction temperature of 150°C

-Avoid using this transistor as a direct replacement without confirming the pinout and specifications