BC33740BU

Single Bipolar Transistors Overview

The BC33740BU is an NPN silicon epitaxial planar transistor manufactured by onsemi, designed for general-purpose switching and amplifier applications. It features a maximum collector current of 800 mA and a collector-emitter voltage rating of 45 V. The device exhibits a high DC current gain (hFE) range of 250 to 630, classifying it as the '40' gain group within the BC337 series. Packaged in a lead-free TO-92-3 through-hole case, it supports a maximum junction temperature of 150 °C and offers a power dissipation capability of 625 mW at 25 °C ambient conditions.

Single Bipolar Transistors Feature Summary

• High DC current gain classification for efficient signal amplification
• Robust thermal performance with a maximum junction temperature of 150 °C
• Lead-free construction compliant with environmental standards

Single Bipolar Transistors Applications

• Audio frequency amplifier stages
• General-purpose switching circuits
• Driver transistor applications

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'BU' against the manufacturer's official datasheet to confirm the package type and packaging format. Ensure the component matches the required hFE binning for the '40' gain group. Confirm RoHS compliance status and lead-free material specifications directly from the production documentation before procurement.

Single Bipolar Transistors Selection Notes

Select this component when a medium-power NPN transistor with high current gain is required for audio or switching tasks. Compare the 800 mA continuous collector current limit against circuit demands. Evaluate the TO-92-3 package constraints for thermal management and PCB layout requirements relative to the 625 mW power dissipation rating.

Single Bipolar Transistors Part Context

This part belongs to the BC337 family of NPN bipolar junction transistors, which are widely used in consumer electronics and industrial control systems. The BC337 series is typically paired with its PNP complement, the BC327, to form complementary pairs for push-pull output stages and differential amplifier configurations.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC33740TA and BC33740TAR from onsemi, which share identical electrical characteristics but differ in packaging format.