1N4126-1

Single Zener Diodes Overview

The Microchip Technology 1N4126-1 is a 500 mW Zener voltage regulator housed in an axial-lead glass DO-35 package. It features a nominal Zener voltage of 51 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65 °C to +175 °C. Key electrical parameters include a maximum reverse current of 38.8 µA, a maximum noise density of 40 µV/√Hz, and a dynamic impedance of 300 Ω at the test current of 250 µA.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced reliability
• Qualified per MIL-PRF-19500/435 up to JANS level
• Hermetically sealed glass DO-35 package
• Inherently radiation hard

Single Zener Diodes Applications

• High reliability military applications
• Voltage regulation over broad current ranges
• Temperature compensation circuits
• Reference voltage sources

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required qualification level (JAN, JANTX, JANTXV, or JANS). Confirm RoHS compliance status, as compliant versions are available only on commercial grades. Ensure the specific voltage tolerance aligns with design requirements, as standard tolerance is ±5%.

Single Zener Diodes Selection Notes

Select this component for applications requiring high-reliability Zener regulation in harsh environments. Consider the negative temperature coefficient below 6.8 V and positive above 6.8 V when designing bias networks. Verify thermal derating requirements if operating near the maximum junction temperature limit.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mW metallurgically bonded glass Zener diodes. These devices are JEDEC registered equivalents to the 1N4099 through 1N4135 series. The series offers voltages from 1.8 V to 100 V with various tolerance options.

Single Zener Diodes Replacement Considerations

JEDEC registered equivalents include the 1N4126 series without the metallurgical bond suffix. Surface mount equivalents are available in the 1N4099UR-1 through 1N4135UR-1 series.