BCV27_D87Z

Overview

The BCV27_D87Z is an NPN silicon planar Darlington transistor manufactured by onsemi. It features a high collector-emitter voltage rating and low saturation voltage characteristics, making it suitable for general audio frequency applications requiring high collector current. The component is housed in a SOT-23 surface-mount package with three pins. Key electrical specifications include a maximum DC collector current of 100 mA, a collector-emitter breakdown voltage (VCEO) of 50 V, and an emitter-base breakdown voltage (VEBO) of 5 V. The device operates within a temperature range of -55°C to +150°C and has a power dissipation capability of 300 mW.

Feature Summary

• High collector-emitter voltage rating for robust operation
• Low saturation voltage for efficient switching
• NPN silicon planar Darlington configuration
• SOT-23 surface-mount packaging

Applications

• General audio frequency amplification
• High collector current switching applications
• Driver stages in electronic circuits

Procurement Notes

Verify the manufacturer marking and date code against official onsemi documentation to ensure authenticity. Confirm that the SOT-23 package dimensions match the specific datasheet revision required for your PCB layout. Check for any obsolescence notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a compact NPN Darlington transistor with moderate current handling and high voltage tolerance is required. Ensure the application's thermal environment allows for the specified 300 mW power dissipation in the SOT-23 package. Compare the 50 V VCEO rating against the circuit's peak voltage requirements to guarantee safe operating margins.

Part Context

This part belongs to the BCV27 series of NPN Darlington transistors produced by onsemi. It is functionally equivalent to parts from other manufacturers such as Diodes Incorporated and Fairchild Semiconductor under the same base model number. The D87Z suffix typically denotes specific tape-and-reel packaging configurations used for automated assembly processes.

Replacement Considerations

Direct substitutes include BCV27 variants from Diodes Incorporated and Fairchild Semiconductor. Verify pinout compatibility and electrical parameter equivalence, particularly VCEO and IC ratings, before substitution.