Power bipolar

ST's broad range of power bipolar junction transistors (BJT) will give you the perfect fit for your energy-efficient designs. The range includes Darlington transistors and BJTs with a VCES from 15 V to 1700 V. Power bipolar belong to the STPOWER family.

Key features of ST's bipolar NPN / PNP transistors

  • Fast switching times and very low saturation voltage resulting in reduced switching and conduction losses
  • Integrated diode versions for reduced component count
  • Well-controlled hFE parameter for increased reliability
  • Best cost-performance ratio

These power bipolar transistors are available in both NPN and PNP polarity and they are offered in a large variety of SMD and through all packages.

Our wide STPOWER product portfolio, combined with state-of-the art packaging and protections for high reliability and safety, helps designers find the right solutions for customized, high-efficiency applications that will last a long lifetime.

Automotive-grade high voltage ignition coil driver

Developed in multi-epitaxial planar technology, this NPN Darlington transistor is specifically designed for use as an electronic ignition power actuator in an automotive environment. However, its ruggedness makes it a good solution for power actuators in any operating condition.

With a collector-emitter voltage (VCES) of 500 V and a collector current (IC) of 15 A, it is available in TO-220 (BU931T) and TO-247 (BU931P) packages.

Main features:

  • AEC-Q101 qualified
  • Very rugged bipolar technology
  • High operating junction temperature