JANS1N4978DUS

Single Zener Diodes Overview

The JANS1N4978DUS is a single Zener diode manufactured by Microchip Technology, designed for high-reliability applications. It features a nominal Zener voltage of 68 V with a tight tolerance of ±1%. The component is rated for a maximum power dissipation of 5 W and utilizes a surface-mount D-5B package. It is qualified under the JANS (Military) grade standards, ensuring performance in demanding environments.

Single Zener Diodes Feature Summary

• High-reliability military-grade construction suitable for critical systems
• Precision voltage regulation with ±1% tolerance for accurate reference applications
• Surface-mount D-5B package design for automated assembly integration

Single Zener Diodes Applications

• Military aerospace electronic systems
• High-reliability voltage regulation circuits
• Precision reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required JANS qualification level and D-5B surface-mount package configuration. Confirm that the ±1% tolerance aligns with circuit design specifications. Ensure compatibility with existing PCB footprints and soldering profiles for the D-5B case style before procurement.

Single Zener Diodes Selection Notes

Select this component when strict voltage accuracy and military reliability are required. The D-5B surface-mount format is appropriate for space-constrained designs. Compare against through-hole alternatives if board layout flexibility is needed, but prioritize this variant for its specified precision and ruggedness in harsh environments.

Single Zener Diodes Part Context

This device belongs to the 1N4978 series of Zener diodes, adapted for surface-mount technology. While the standard 1N4978 is available in axial through-hole packages, the JANS1N4978DUS variant provides equivalent electrical characteristics in a compact D-5B form factor, tailored for modern manufacturing processes without compromising military-grade performance standards.

Single Zener Diodes Replacement Considerations

Direct substitutes include other JANS-qualified Zener diodes with identical 68 V, 5 W, and ±1% specifications in compatible surface-mount packages. Verify pinout and thermal characteristics when cross-referencing with alternative manufacturers' military-grade components.