D45H2A

Single Bipolar Transistors Overview

The D45H2A is a PNP epitaxial silicon power transistor manufactured by Fairchild Semiconductor. It belongs to the D45H series designed for general-purpose power applications and switching. The device features a single-element configuration housed in a TO-220AB flange mount package with plastic/epoxy encapsulation. Key electrical characteristics include a collector-emitter voltage rating of -45V, a maximum DC collector current of 10A, and a minimum DC current gain (hFE) of 40. The component supports a junction temperature range from -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• Designed for general-purpose power applications and high-speed switching operations
• Features low collector-emitter saturation voltage for efficient power handling
• Utilizes PNP epitaxial silicon construction for robust performance

Single Bipolar Transistors Applications

• General-purpose power switching circuits
• Power amplifier stages requiring PNP configuration
• High-voltage switching applications within specified ratings

Single Bipolar Transistors Procurement Notes

Verify the specific suffix 'A' against official Fairchild documentation to confirm exact binning or testing criteria, as suffixes often denote specific parameter ranges or manufacturing revisions. Ensure the source document explicitly lists D45H2A rather than generic family data. Confirm package integrity and lead availability through authorized distributors only.

Single Bipolar Transistors Selection Notes

Select this component when a PNP power transistor with a 45V breakdown voltage and 10A continuous current capability is required. The TO-220AB package facilitates direct heatsink mounting for thermal management. Compare hFE minimums and saturation voltages against circuit requirements to ensure adequate drive margins and efficiency in switching or linear modes.

Single Bipolar Transistors Part Context

The D45H2A is part of the D45H series of PNP power transistors. This series includes variants differentiated primarily by their collector-emitter voltage ratings, such as -30V, -45V, -60V, and -80V models. The D45H2A specifically corresponds to the -45V rating tier within this lineup, sharing common packaging and thermal characteristics with other members of the series.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes within the same voltage class include the D45H1J69Z (-30V, lower voltage rating) or D45H4 (-45V, similar rating). Verify that replacement parts match the 10A current rating and TO-220AB package dimensions. Cross-reference datasheets for saturation voltage and current gain specifications to ensure functional equivalence.