2SD794A-AZ

Overview

The 2SD794A-AZ is a single NPN bipolar junction transistor manufactured by Renesas Electronics Corporation. It is designed for through-hole mounting in the TO-126 package. The device features a maximum collector current of 3 A and a collector-emitter breakdown voltage of 60 V. It has a maximum power dissipation of 1 W and a transition frequency of 60 MHz. The component supports an operating temperature up to 150 °C and offers a minimum DC current gain (hFE) of 800.

Feature Summary

• High DC current gain capability for efficient signal amplification
• Robust thermal performance with high maximum operating temperature rating
• Through-hole construction suitable for standard PCB mounting

Applications

• General-purpose amplifier circuits
• Switching applications requiring moderate current handling
• Audio output stages

Procurement Notes

Verify that the ordering suffix matches the exact part number required for your design. Confirm the package type is TO-126 and the polarity is NPN. Ensure the manufacturer is identified as Renesas Electronics Corporation or its predecessor entities, as legacy naming conventions may appear in documentation. Check RoHS compliance status if environmental regulations apply to your project.

Selection Notes

Select this component when a through-hole NPN transistor with 3 A current capacity and 60 V voltage rating is needed. Consider the 1 W power dissipation limit and 60 MHz frequency response against circuit requirements. Evaluate the TO-126 package size constraints and thermal management needs for the specific application environment.

Part Context

This component belongs to the Renesas Bipolar Power Transistors family. It is often paired with complementary PNP devices like the 2SB794-AZ for push-pull configurations. The product line is supported for existing customers who have already adopted these parts, indicating it is a mature, established component rather than a new introduction.

Replacement Considerations

Direct substitutes include the generic 2SD794A from other manufacturers such as NEC. Verify pinout compatibility and electrical parameter equivalence before substitution. Cross-reference datasheets to ensure the alternative meets the 3 A current and 60 V voltage specifications.