1N4778A/TR

Overview

The Microchip Technology 1N4778A/TR is a temperature-compensated Zener diode housed in a DO-35 (DO-204AA) through-hole package. It features an 8.5V nominal Zener voltage with a maximum power dissipation of 500mW. The device operates within a temperature range of -55°C to +100°C and utilizes reel packaging for automated assembly.

Feature Summary

• Temperature compensated design for stable voltage regulation across varying thermal conditions
• Hermetically sealed glass construction ensuring environmental durability
• Single configuration optimized for precision reference applications

Applications

• Precision voltage reference circuits
• Temperature-stable regulator designs
• Industrial instrumentation requiring high reliability

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and testing standards. Ensure compatibility with existing board layouts for DO-35 footprints. Confirm RoHS compliance status if required by project specifications before finalizing procurement orders.

Selection Notes

Select this component when precise voltage stability over temperature is critical. The 500mW rating supports moderate current loads. Verify that the 8.5V breakdown voltage aligns with circuit requirements. Consider the through-hole mounting style for mechanical robustness in industrial environments.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. It is designed for applications requiring hermetic sealing and temperature compensation. The DO-35 package provides a standard form factor for through-hole integration in electronic assemblies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.