1N4122-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4122-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 36 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and features a maximum reverse leakage current of 10 nA at 27.4 V. It includes a tape and reel option indicated by the TR suffix.

Single Zener Diodes Feature Summary

• Hermetically sealed internal metallurgical bond for high reliability
• Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels
• Low noise density performance suitable for precision regulation

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Military and aerospace electronic systems
• Precision reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the specific order matches the required military qualification level (JAN, JANTX, JANTXV, or JANS), as these are distinct product grades. Confirm the presence of the 'TR' suffix indicates tape and reel packaging rather than bulk. Ensure compliance requirements align with the non-RoHS commercial status unless explicitly specified otherwise.

Single Zener Diodes Selection Notes

Select this component when a stable 36 V reference is needed in harsh environments. The DO-35 package supports through-hole mounting. Consider the positive temperature coefficient above 5.6 V for thermal stability. Verify that the 500 mW power dissipation rating meets the circuit's thermal design constraints under expected operating conditions.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes. These devices share common construction features including the axial-lead glass package and metallurgical bonding. The series covers a wide voltage range from 1.8 V to 100 V, allowing for standardized sourcing across different voltage requirements.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: JANS1N4122-1.