JANTX1N4979

Single Zener Diodes Overview

The JANTX1N4979 is a single axial-lead Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 75 V with a tolerance of ±5%. The device supports a maximum power dissipation of 5 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 2 µA at 56 V, a Zener impedance of 55 Ohms, and a test current of 20 mA. The component utilizes an E package (DO-201AE) for through-hole mounting.

Single Zener Diodes Feature Summary

• Military-grade reliability compliant with MIL-PRF-19500/356 specifications
• Extended thermal stability suitable for high-temperature environments up to 175°C
• High power handling capability of 5 W in an axial leaded package

Single Zener Diodes Applications

• Precision voltage regulation in military avionics systems
• Overvoltage protection circuits in aerospace instrumentation
• Reference voltage sources in ruggedized electronic equipment

Single Zener Diodes Procurement Notes

Verify the specific revision level and lot traceability requirements against MIL-PRF-19500/356 standards before procurement. Confirm that the supplier provides full material and process documentation. Ensure the ordering suffix matches the required packaging and testing conditions. Validate compliance with export control regulations applicable to defense-related components.

Single Zener Diodes Selection Notes

Select this component when a stable 75 V reference is required in harsh thermal environments. The 5 W power rating allows for robust operation in high-current regulation scenarios. The axial package facilitates easy integration into traditional through-hole PCB layouts or chassis-mounted assemblies where space constraints are less critical than thermal performance.

Single Zener Diodes Part Context

This part belongs to the 1N4979 series of Zener diodes produced under military quality standards. It serves as a specialized variant designed for applications requiring higher reliability and stricter parameter controls than commercial equivalents. The JANTX designation indicates enhanced screening and testing procedures defined by the relevant military specification.

Single Zener Diodes Replacement Considerations

Direct functional substitutes include JAN1N4979 and JANTXV1N4979. Verify pinout compatibility and ensure the alternative meets the same MIL-PRF-19500/356 qualification requirements. Check if the replacement offers equivalent thermal and electrical performance for the specific application.