JANS1N4624-1/TR

Single Zener Diodes Overview

The JANS1N4624-1/TR is a single Zener diode manufactured by Microchip Technology, designed for radiation-hardened applications. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 3 V and a Zener impedance of 1550 Ohms. It utilizes a DO-35 (DO-204AH) axial through-hole package.

Single Zener Diodes Feature Summary

• Radiation-hardened design suitable for space and high-radiation environments
• Extended operating temperature range supporting extreme thermal conditions
• Single Zener configuration in a standard axial leaded package

Single Zener Diodes Applications

• Spacecraft electronic systems requiring radiation tolerance
• Military avionics circuits demanding high reliability
• High-reliability voltage regulation and protection applications

Single Zener Diodes Procurement Notes

Verify the specific suffix /TR indicates tape-and-reel packaging configuration. Confirm that the JANS qualification meets the required radiation hardness levels for the target mission profile. Ensure the DO-35 package dimensions align with the PCB footprint requirements. Validate RoHS status as military-grade components may have different compliance classifications than commercial equivalents.

Single Zener Diodes Selection Notes

Select this component when radiation hardness is a critical requirement for the application environment. The 4.7 V Zener voltage provides a specific reference point for regulation circuits. Consider the 500 mW power rating to ensure adequate thermal headroom in the final assembly. The wide temperature range eliminates the need for additional thermal management in extreme cold or heat scenarios.

Single Zener Diodes Part Context

This part belongs to the 1N4624 series of Zener diodes produced by Microchip Technology under its JANS (Military/Jet Propulsion Laboratory) qualification line. The JANS designation signifies adherence to strict manufacturing and testing standards for aerospace and defense applications. It serves as a specialized variant of the standard 1N4624 diode, offering enhanced durability against ionizing radiation.

Single Zener Diodes Replacement Considerations

Direct substitutes include other JANS-qualified Zener diodes with identical 4.7 V specifications and radiation hardness ratings. Verify pinout compatibility and package dimensions when considering alternative manufacturers. Ensure any replacement maintains the same temperature range and power dissipation capabilities.