1N4127-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4127-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum reverse current of 10 µA at 42.6 V, a maximum dynamic impedance of 300 Ohms, and a maximum noise density of 40 µV/√Hz. The rated average power dissipation is 0.5 W.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 standards
• Hermetically sealed axial-lead glass package
• Inherently radiation hard design

Single Zener Diodes Applications

• High reliability voltage regulation
• Military and aerospace electronic circuits
• Harsh environment applications requiring radiation hardness

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level (JAN, JANTX, JANTXV, or JANS) as the base part number covers multiple reliability grades. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military qualified parts. Ensure the tape and reel packaging aligns with automated assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a 56 V reference is needed in an axial-lead form factor. Consider the positive temperature coefficient above 5 V for thermal stability analysis. Evaluate the maximum noise density against circuit sensitivity requirements. Verify that the operating current remains within the specified test current limits to maintain accurate voltage regulation.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mW Zener diodes manufactured by Microchip Technology. The series offers a wide voltage range from 1.8 V to 100 V. These devices are designed for demanding environments where long-term stability and radiation resistance are critical performance factors.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4127CUR-1, JANTX1N4127CUR-1, and JANS1N4127CUR-1. Substitutes must match the 56 V nominal voltage, 500 mW power rating, and DO-35 package dimensions.