1N4126D

Single Zener Diodes Overview

The Microchip Technology 1N4126D is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 51 V with a test current of 250 µA and maximum impedance of 300 Ohms. The device supports MIL-PRF-19500/435 qualifications including JAN, JANTX, JANTXV, and JANS levels. Operating temperature ranges from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 for military and aerospace applications
• Hermetically sealed glass DO-35 axial-lead package
• Inherently radiation hard design

Single Zener Diodes Applications

• Voltage regulation in harsh environments
• High-reliability aerospace circuits
• Military electronic systems requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as this determines qualification standards. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from mil-qualified parts. Ensure the ordering suffix matches the desired tolerance and packaging format.

Single Zener Diodes Selection Notes

Select based on the required Zener voltage tolerance and operating environment. The 'D' suffix indicates a 1% voltage tolerance. Consider thermal derating requirements above 50 °C lead temperature. Verify package compatibility with existing PCB layouts, as surface mount alternatives exist in the same series.

Single Zener Diodes Part Context

This component belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes manufactured by Microchip Technology. These devices are designed for high-reliability applications and offer a wide range of voltages from 1.8 V to 100 V. The series includes both axial-lead and surface mount options.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4126-1, JANTX1N4126-1, JANTXV1N4126-1, and JANS1N4126-1 depending on the required reliability level. Surface mount equivalents are available in the 1N4126UR-1 series.