BD135 datasheet | transistor equivalent & pinout STMicroelectronics

BD135 – Transistor

BD135 Pinout

The BD135 is an NPN power transistor commonly used in electronic circuits for switching and amplification applications. It features three key terminals: the base (B), collector (C), and emitter (E). Understanding the pinout configuration is essential for correctly integrating the BD135 into various designs, ensuring reliable operation in your circuits.

The BD135’s pinout layout consists of the base for current control, the collector for output, and the emitter, typically grounded. This configuration allows the BD135 to serve effectively in amplifying signals and switching applications, making it a valuable component in many electronic systems.

BD135 Equivalent

BD135 Equivalent pinout

These equivalents have the same TO-126 (SOT-32) packaging and similar electrical characteristics, suitable for easy substitution.

BD135: Suitable for low to moderate voltage (up to 45V applications).

BD137: Suitable for moderate voltage applications (up to 60V).

BD139: Suitable for higher voltage applications (up to 80V).

All these transistors share identical pin arrangements and packaging, making them fully interchangeable depending on your voltage requirements.