1N4127/TR

Single Zener Diodes Overview

The Microchip Technology 1N4127/TR is a 56 V Zener diode with a 5% voltage tolerance, housed in an axial-lead glass DO-35 (DO-204AH) package. It features a maximum power dissipation of 500 mW and operates within a junction temperature range of -65 °C to +175 °C. The device exhibits a maximum Zener impedance of 300 Ohms at a test current of 250 µA, with a maximum reverse leakage current of 10 µA at 42.6 V. The TR suffix indicates tape-and-reel packaging.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability applications requiring radiation hardness
• Low noise environments utilizing low capacitance characteristics

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number covers commercial through JANS qualifications. Confirm that the TR suffix aligns with the intended automated assembly process. Ensure the selected variant meets the necessary environmental compliance requirements for the target deployment.

Single Zener Diodes Selection Notes

Select this component when a 56 V reference is needed in an axial-lead form factor. Consider the 300 Ohm dynamic impedance and 10 µA leakage limits against circuit sensitivity. Evaluate the thermal derating curve if operating near the upper temperature limit or under high ambient conditions.

Single Zener Diodes Part Context

This device belongs to the 1N4099-1 through 1N4135-1 series of 500 mW metallurgically bonded glass Zener diodes. The series provides voltages from 1.8 to 100 V with various tolerance options. The 1N4127 designation specifically identifies the 56 V nominal breakdown voltage within this extensive lineup.

Single Zener Diodes Replacement Considerations

JAN1N4127CUR-1

Single Zener Diodes FAQ

What is the maximum noise density specification?

The maximum noise density is 40 μV / √Hz.

How is polarity indicated on the package?

Polarity is indicated by a band on the cathode end.