BC337-040

Single Bipolar Transistors Overview

The onsemi BC337-040 is a single NPN silicon epitaxial planar transistor designed for switching and audio frequency amplifier applications. It features a maximum collector current of 800 mA and a collector-emitter voltage rating of 45 V. The device offers a high DC current gain (hFE) range up to 630, with a transition frequency of 100 MHz. Power dissipation is rated at 625 mW in a TO-92-3 through-hole package. Operating temperatures extend from -55°C to +150°C junction temperature.

Single Bipolar Transistors Feature Summary

• High DC current gain suitable for low-level signal amplification
• Low collector-emitter saturation voltage for efficient switching
• Lead-free construction compliant with RoHS standards

Single Bipolar Transistors Applications

• Audio driver stages
• General-purpose switching circuits
• Low-power output stages

Single Bipolar Transistors Procurement Notes

Verify the specific suffix code against official datasheets to confirm the exact hFE binning grade, as the base part number covers multiple gain ranges. Confirm the package variant matches the required lead configuration for the target PCB footprint. Ensure environmental compliance documentation aligns with project requirements.

Single Bipolar Transistors Selection Notes

Select this component when moderate current handling and high gain are required in a standard through-hole form factor. Compare hFE specifications against circuit biasing needs to ensure adequate drive capability. Verify thermal management strategies for power dissipation limits within the intended operating environment.

Single Bipolar Transistors Part Context

This device belongs to the BC337 series of NPN transistors manufactured by onsemi. It serves as a general-purpose small-signal transistor often paired with complementary PNP devices like the BC327 series for push-pull configurations. The series is widely utilized in consumer electronics and industrial control systems requiring reliable bipolar junction transistor performance.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include the BC337-40TA or BC337-40BU from onsemi, which share identical electrical characteristics but differ in packaging format. Other manufacturers may offer equivalents such as the 2N2222A if pinout compatibility and lower current ratings are acceptable.