1N457AUR

Single Diodes Overview

The 1N457AUR is a temperature-compensated Zener reference diode manufactured by Microchip Technology. It features a nominal Zener voltage of 6.4V with a tolerance of +5%. The device utilizes a metallurgically bonded construction and is housed in a hermetically sealed glass LL34 MELF-2 (DO-213AA) package. It supports an operating and storage temperature range from -65°C to +175°C, with a DC power dissipation rating of 500 mW at +50°C.

Single Diodes Feature Summary

• Temperature compensated design for stable voltage reference performance across varying thermal conditions
• Metallurgically bonded construction ensuring structural integrity and reliability
• Hermetically sealed glass encapsulation providing environmental protection

Single Diodes Applications

• Precision voltage reference circuits requiring thermal stability
• Military and aerospace electronic systems
• High-reliability industrial instrumentation

Single Diodes Procurement Notes

Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as availability varies by grade. Confirm that the hermetic seal and metallurgical bonding meet your environmental standards. Ensure the DO-213AA package dimensions align with your PCB layout constraints before finalizing procurement.

Single Diodes Selection Notes

Select this component when a stable 6.4V reference is needed in harsh environments. The wide temperature range (-65°C to +175°C) makes it suitable for extreme conditions. Consider the 500 mW power dissipation limit and derating requirements above +50°C during thermal design. Verify compatibility with MIL-PRF-19500/452 standards if military qualification is mandated.

Single Diodes Part Context

This part belongs to the 1N4565AUR through 1N4584AUR series of temperature-compensated Zener reference diodes. These devices are qualified per MIL-PRF-19500/452 and are available in various reliability grades including JAN, JANTX, JANTXV, and JANS. The series is designed for high-reliability applications where consistent voltage regulation over temperature is critical.

Single Diodes Replacement Considerations

Substitutes must match the 6.4V nominal voltage, +5% tolerance, and hermetic LL34/MELF-2 package. Verify equivalent temperature compensation characteristics and maximum operating temperature ratings. Ensure the replacement meets the same MIL-PRF-19500/452 qualification level if required.