JANTX1N4989D

Single Zener Diodes Overview

The JANTX1N4989D is a hermetically sealed Zener voltage regulator manufactured by Microsemi Corporation. It utilizes voidless-glass construction with an internal metallurgical bond to ensure reliability in harsh environments. The device operates at a nominal Zener voltage of 200V and is rated for a power dissipation of 5W. It features a maximum reverse leakage current of 5µA and a test current of 36.6mA. The component supports an operating temperature range from -65°C to +175°C and is housed in an axial leaded package.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using voidless-glass technology
• Internal metallurgical bond for enhanced structural integrity
• High-temperature capability suitable for extreme environments

Single Zener Diodes Applications

• Military aerospace electronic systems
• Radiation-hardened circuit protection
• High-reliability voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official Microchip/Microsemi documentation to confirm exact electrical tolerances and testing levels. Ensure procurement channels are authorized to guarantee component authenticity and traceability for critical applications. Confirm compliance with relevant military specifications prior to integration.

Single Zener Diodes Selection Notes

Select this component when high-voltage regulation is required alongside strict environmental resilience. The 200V rating and 5W power dissipation define its operational limits. Consider the axial package constraints during PCB layout. Validate that the specified temperature range meets the target system's thermal requirements.

Single Zener Diodes Part Context

This part belongs to the JANTX series of Zener diodes, which are designed for high-reliability applications. The 'JAN' prefix indicates qualification under military standards, while 'TX' denotes specific screening levels. These regulators are distinct from commercial variants due to their hermetic sealing and rigorous manufacturing controls.

Single Zener Diodes Replacement Considerations

Consult official substitution lists for equivalent radiation-hardened or hermetically sealed Zener diodes. Verify pinout compatibility and thermal characteristics before replacing existing designs.