BC639_D27Z

Single Bipolar Transistors Overview

The BC639_D27Z is an NPN silicon small-signal transistor manufactured by onsemi. It features a maximum collector current of 1 A and a collector-emitter voltage rating of 80 V. The device is housed in a TO-92 cylindrical plastic package with three leads. It supports a maximum power dissipation of 625 mW and operates within a junction temperature range of -55 °C to +150 °C. The component complies with RoHS standards and is designed for through-hole mounting applications.

Single Bipolar Transistors Feature Summary

• NPN polarity configuration for signal amplification and switching
• High voltage tolerance suitable for general-purpose circuits
• Robust thermal performance with extended operating temperature range

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Signal amplification stages
• Driver circuits for low-power loads

Single Bipolar Transistors Procurement Notes

Verify the specific suffix D27Z against official onsemi documentation to confirm packaging details and compliance status. Ensure the source document explicitly identifies the manufacturer as onsemi, as historical data may reference Fairchild Semiconductor prior to corporate restructuring. Cross-reference the part number with current product availability lists to confirm active status or obsolescence.

Single Bipolar Transistors Selection Notes

Select this component when an NPN transistor with 80 V breakdown voltage and 1 A continuous current capability is required. The TO-92 package is appropriate for prototyping and low-volume production where through-hole mounting is preferred. Consider the 625 mW power dissipation limit during thermal design to ensure operation within safe junction temperatures under load conditions.

Single Bipolar Transistors Part Context

The BC639 series represents a family of general-purpose NPN transistors widely used in electronic designs. The BC639_D27Z variant specifically denotes the standard through-hole TO-92 packaging configuration. This component serves as a fundamental building block for analog and digital logic interfaces, providing reliable performance in consumer electronics and industrial control systems.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers include BC639G and BC639RL1G from onsemi. These variants share identical electrical specifications and pinout configurations, allowing for direct replacement in existing designs without circuit modification.