BC33725

Single Bipolar Transistors Overview

The Fairchild Semiconductor BC33725 is an NPN silicon epitaxial planar transistor designed for switching and audio frequency amplifier applications. It belongs to the BC337 series, which categorizes devices by DC current gain groups including -16, -25, and -40. The component features a maximum collector current of 800 mA and a collector-emitter voltage rating of 45 V. Key electrical parameters include a collector-base voltage of 50 V, an emitter-base voltage of 5 V, and a transition frequency of 100 MHz. Power dissipation is rated at 625 mW with a maximum operating temperature of +150°C.

Single Bipolar Transistors Feature Summary

• Designed for general-purpose switching and audio frequency amplifier applications
• Utilizes NPN silicon epitaxial planar technology for reliable performance
• Categorized into specific DC current gain groups to ensure consistent amplification characteristics

Single Bipolar Transistors Applications

• Audio frequency amplification circuits
• General-purpose signal switching
• Driver transistor stages in electronic systems

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin carefully as the BC337 series is produced by multiple vendors including onsemi, NXP, and Taiwan Semiconductor. Confirm that the specific suffix matches the required gain group (-25) and package type (TO-92). Check RoHS compliance status and lead-free specifications against project requirements before procurement.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with moderate current handling and high gain is required for linear or switching tasks. Ensure the application voltage does not exceed the 45 V collector-emitter limit. Consider thermal management for power dissipation near the 625 mW limit. Verify pinout compatibility if replacing existing designs using similar TO-92 packages.

Single Bipolar Transistors Part Context

This device is part of the widely used BC337 family of small-signal NPN transistors. The series is distinguished by grouping parts based on their DC current gain (hFE), allowing designers to select precise amplification levels. The BC33725 specifically denotes the -25 gain group variant within this standardized lineup.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC337-25 from other manufacturers such as onsemi or NXP. Cross-reference datasheets to confirm identical pinouts and electrical limits. Generic replacements must match the 800 mA current and 45 V voltage ratings.