BD135

### BD135 Description The BD135 is a high-performance NPN bipolar transistor offered by onsemi, designed for a wide range of applications in the electronics industry. With a maximum collector current of 1.5 A and a collector-emitter breakdown voltage of 45 V, this device delivers exceptional performance in demanding environments. The BD135 is characterized by its low saturation voltage (500 mV at 50 mA and 500 mA), making it ideal for power switching and amplification applications. Its through-hole mounting type and TO126 package provide easy integration into various circuit designs. ### BD135 Features - NPN transistor type for efficient current control and amplification - Maximum collector current (Ic) of 1.5 A for high-power applications - Collector-emitter breakdown voltage of 45 V for reliable operation in high-voltage circuits - Low saturation voltage (500 mV at 50 mA and 500 mA) for efficient power switching - Through-hole mounting type and TO126 package for easy integration into circuit designs - Maximum power dissipation of 1.25 W for handling high-power loads - Moisture sensitivity level (MSL) of 1 (unlimited) for reliable performance in various environmental conditions ### BD135 Applications The BD135's unique combination of high current handling, low saturation voltage, and high breakdown voltage makes it an ideal choice for various applications, including: 1. Power switching and amplification in automotive and industrial systems 2. Audio amplification in consumer electronics 3. Motor control and drive circuits in robotics and automation systems 4. Signal amplification in communication systems ### Conclusion of BD135 The BD135 is a versatile and high-performance NPN bipolar transistor that offers exceptional performance in a wide range of applications. Its unique features, such as high current handling, low saturation voltage, and high breakdown voltage, make it an ideal choice for power switching, amplification, and motor control applications. Despite being classified as obsolete, the BD135 remains a popular choice for engineers and designers who require a reliable and efficient solution for their demanding applications.