Onsemi BUV27G High-Voltage Power Switching Transistor: Performance and Applications

The Onsemi BUV27G is a high-voltage NPN power switching transistor designed to meet the demanding requirements of industrial and consumer applications where robust performance and reliability are critical. Engineered with a planar technology, this device offers a compelling combination of high voltage capability, fast switching speed, and low saturation voltage, making it a preferred choice in power electronic circuits.

A standout feature of the BUV27G is its ability to handle collector-emitter voltages up to 850 V, with a peak collector current of 10 A. This high-voltage tolerance makes it particularly suitable for applications involving inductive loads or significant voltage spikes. The transistor exhibits a relatively low VCE(sat) of 1.5 V (typical) at IC = 3 A, which translates to reduced power losses and improved overall efficiency during operation. Furthermore, its fast switching characteristics help minimize switching losses, a crucial factor in high-frequency designs.

The BUV27G is commonly deployed in a variety of power switching scenarios. Key applications include:

- Switch-mode power supplies (SMPS), particularly in flyback and forward converter topologies.

- Electronic ballasts for fluorescent and high-intensity discharge (HID) lighting.

- Motor control circuits and solenoid/relay drivers.

- CRT display deflection circuits and other high-voltage systems.

Its robust TO-218 package ensures effective thermal management, allowing the device to dissipate heat efficiently and maintain performance under continuous operation.

ICGOOODFIND: The Onsemi BUV27G stands out as a highly reliable and efficient solution for high-voltage power switching, offering designers a optimal balance of performance, durability, and cost-effectiveness for demanding electronic systems.

Keywords:

High-Voltage Switching

Power Transistor

Switch-Mode Power Supply

Fast Switching Speed

Low Saturation Voltage