JANTX1N4979/TR

Single Zener Diodes Overview

The JANTX1N4979/TR is a single axial Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. 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 forward voltage of 1.5 V at 1 A. The component utilizes an E package with axial leads and is supplied in bulk packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with a nominal 75 V Zener breakdown voltage.
• Capable of handling high power dissipation up to 5 W for robust performance.
• Engineered for extreme environmental conditions with an operating temperature range extending to +175°C.
• Features low reverse leakage current to ensure minimal standby power loss.

Single Zener Diodes Applications

• Military-grade voltage reference circuits
• High-temperature power supply regulation
• Avionics protection networks

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as the /TR designation typically indicates tape and reel packaging, whereas standard listings may denote bulk. Confirm MIL-PRF-19500/356 compliance requirements with the supplier. Ensure the procurement channel provides traceability documentation suitable for military or aerospace qualification standards before finalizing purchase orders.

Single Zener Diodes Selection Notes

Select this component when a 75 V regulation point is required in harsh thermal environments. The 5 W power rating allows for significant current handling compared to smaller signal diodes. Consider the axial lead form factor for through-hole mounting constraints. Verify that the 55 Ohm impedance meets the noise sensitivity requirements of the target circuit design.

Single Zener Diodes Part Context

This part belongs to the 1N4979 series of Zener diodes produced by Microchip Technology under the JANTX quality level. The JANTX classification denotes enhanced screening and reliability testing beyond commercial standards, making it suitable for demanding industrial and defense applications where long-term stability is critical.

Single Zener Diodes Replacement Considerations

Direct substitutes include JAN1N4979 and JANTXV1N4979 for equivalent electrical specifications. For surface-mount alternatives, consider the 1N4979US series, though mechanical mounting differences must be addressed during redesign.