BD136

Overview

The BD136 is a PNP silicon epitaxial planar transistor manufactured by STMicroelectronics. It is housed in the SOT-32 plastic package and serves as the complementary counterpart to the NPN BD139 within the BD135-BD140 series. Designed for low voltage applications, it supports a collector-emitter voltage of -80 V and a continuous collector current of -1.5 A. The device features pre-selected DC current gain groups and is intended for use in audio amplifiers and drivers utilizing complementary or quasi-complementary circuits.

Feature Summary

• Epitaxial planar construction mounted in a compact SOT-32 plastic package
• Pre-selected DC current gain (hFE) groups for consistent performance
• Complementary pairing with NPN types for balanced circuit design

Applications

• Audio amplifiers
• Drivers utilizing complementary circuits
• Drivers utilizing quasi-complementary circuits

Procurement Notes

Verify the specific ordering code suffix when purchasing, as variants such as BD136-16 exist alongside standard BD136 units. Confirm that the received components match the required hFE group specifications for your application. Ensure compliance with the manufacturer's terms regarding product usage limitations and warranty disclaimers before integration into final designs.

Selection Notes

Select the BD136 when a PNP output stage is required in low-voltage audio or driver circuits. It pairs directly with the BD139 NPN transistor to form complementary push-pull configurations. Consider the thermal resistance characteristics and the need for heat sinking if operating near maximum power dissipation limits at elevated ambient temperatures.

Part Context

This component belongs to the BD135-BD136-BD139-BD140 family of complementary low voltage transistors. The series includes NPN types (BD135, BD139) and PNP types (BD136, BD140). All devices share similar physical packaging and are engineered for general-purpose audio and driver applications requiring matched complementary characteristics.

Replacement Considerations

The BD140 is the direct complementary PNP equivalent within the same series. For replacement purposes, verify that the substitute part matches the original electrical ratings and package dimensions to ensure compatibility with existing circuit layouts and thermal management solutions.

FAQ

What is the maximum collector-emitter voltage for the BD136?

The maximum collector-emitter voltage (VCEO) for the BD136 is -80 V.

Is the BD136 available in different gain groups?

Yes, products are pre-selected in DC current gain groups, such as those designated by suffixes like -16.

What type of package does the BD136 use?

The BD136 is mounted in an SOT-32 plastic package.