BC107B

Single Bipolar Transistors Overview

The STMicroelectronics BC107B is a silicon Planar Epitaxial NPN transistor housed in a TO-18 metal case. Designed for low noise general purpose audio amplifiers, it serves as a suitable component for driver stages, low noise input stages, and signal processing circuits within television receivers. The device features a collector-base voltage of 50 V, a collector-emitter voltage of 45 V, and a maximum collector current of 100 mA. It offers a DC current gain (hFE) ranging from 200 to 450 at IC = 2 mA.

Single Bipolar Transistors Feature Summary

• Utilizes silicon Planar Epitaxial technology for robust performance
• Optimized for low noise applications in audio amplifier circuits
• Housed in a durable TO-18 metal package for thermal stability

Single Bipolar Transistors Applications

• Driver stages in electronic circuits
• Low noise input stages for audio equipment
• Signal processing circuits in television receivers

Single Bipolar Transistors Procurement Notes

Verify the specific manufacturer source when sourcing this component, as multiple vendors produce the BC107B part number. Ensure the received device matches the TO-18 metal case specification and confirms the NPN polarity. Cross-reference datasheet revisions to confirm electrical characteristics align with your design requirements, particularly regarding the hFE gain range and noise figure specifications.

Single Bipolar Transistors Selection Notes

Select the BC107B when a low noise NPN transistor is required for audio frequency applications. It is appropriate for designs needing a metal can package for superior heat dissipation compared to plastic alternatives. Consider the complementary BC177B PNP type if push-pull configurations are necessary. Evaluate the transition frequency and capacitance values against the specific bandwidth requirements of the target circuit.

Single Bipolar Transistors Part Context

The BC107B belongs to the BC107 series of small signal NPN transistors manufactured by STMicroelectronics. This series is engineered for general-purpose amplifier applications using epitaxial planar processes. The BC107B variant specifically targets low noise performance, distinguishing it from standard switching or high-power transistor families. It is part of a broader ecosystem that includes complementary PNP types like the BC177B.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers include BC107C and BC108B from various manufacturers, provided they meet the TO-18 package and electrical parameter requirements. Verify pinout compatibility and thermal resistance specifications before substitution.