BD180G

Overview

The BD180G is a PNP silicon bipolar junction transistor (BJT) manufactured by onsemi. It features a maximum collector current of 1 A and a collector-emitter voltage rating of 80 V. The device is housed in a TO-225AA (TO-126) three-pin package with a power dissipation capacity of 30 W. Key electrical parameters include an emitter-base voltage of 5 V, a collector-emitter saturation voltage of 800 mV, and a gain bandwidth product of 3 MHz. This component is engineered for medium-power applications.

Feature Summary

• Designed for use in audio amplifiers and drivers utilizing complementary or quasi-complementary circuits
• Medium-power silicon PNP bipolar transistor construction
• Suitable for general-purpose switching and amplification tasks

Applications

• 5 to 10 W audio amplifiers
• Audio driver circuits
• Complementary circuit configurations

Procurement Notes

Verify the specific ordering suffix when sourcing. Prefixes such as S or NSV indicate automotive qualification to AEC standards, which differs from the standard industrial grade. Confirm the package variant matches the required thermal and mechanical constraints. Ensure the supplier provides official datasheets to validate the exact electrical characteristics and pinout configuration before integration into the design.

Selection Notes

Select this component for designs requiring a PNP transistor with 80 V blocking capability and 1 A continuous current handling. The TO-225AA package offers a balance of thermal performance and board space efficiency. Consider the 3 MHz gain bandwidth product for frequency response requirements in audio signal paths. Evaluate the 800 mV saturation voltage for power loss calculations in low-side or high-side switching topologies.

Part Context

The BD180G belongs to onsemi’s family of general-purpose PNP transistors. It serves as a complement to NPN devices in push-pull output stages. The TO-225AA plastic encapsulation provides reliable insulation and heat dissipation for medium-power operations. This part is widely used in consumer electronics and audio equipment where robust bipolar switching is required.

Replacement Considerations

Check for direct cross-reference parts with identical 80 V/1 A ratings and TO-225AA packaging. Verify pinout compatibility to ensure Emitter, Base, and Collector alignments match the existing PCB footprint. Automotive-grade equivalents may require AEC-Q101 certification if reliability standards are strict.