BC337A

Single Bipolar Transistors Overview

The onsemi BC337A is an NPN silicon epitaxial planar transistor designed for switching and audio frequency amplifier applications. It features a maximum collector current of 800 mA, a collector-emitter voltage rating of 45 V, and a power dissipation capacity of 625 mW in a TO-92 package. The device exhibits a minimum DC current gain (hFE) of 100 at 100 mA and a transition frequency of 100 MHz.

Single Bipolar Transistors Feature Summary

• Epitaxial silicon construction optimized for low saturation voltage and high current gain
• Suitable for driver stages and general-purpose amplification tasks
• Complementary pairing available with the BC327 PNP counterpart

Single Bipolar Transistors Applications

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

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer source, as the BC337 series is produced by multiple vendors including onsemi, Fairchild, and others. Confirm that the component matches the required hFE binning for the 'A' suffix specification. Ensure the package type and lead configuration align with the target PCB footprint before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when a standard NPN transistor with moderate current handling and reliable gain characteristics is required. It serves as a direct replacement for legacy Motorola designs. Consider thermal management requirements due to the 625 mW dissipation limit in the TO-92 package during continuous operation.

Single Bipolar Transistors Part Context

This part belongs to the widely used BC337/BC327 family of small-signal transistors. The 'A' suffix typically denotes a specific DC current gain range, distinguishing it from other variants like the -25 or -40 groups. It is a standard through-hole component commonly found in consumer electronics and industrial control boards.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include the BC337-25G and BC337-40G from various manufacturers. Verify pinout compatibility and ensure the replacement meets the 45V VCEO and 800mA IC ratings.