1N4371A-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4371A-1/TR is a silicon Zener diode with a nominal voltage of 2.7 V and ±5% tolerance. It operates in a DO-35 axial glass package, rated for 0.5 W average power dissipation at +50°C lead temperature. The device features an internal metallurgical bond and is qualified to MIL-PRF-19500/127 standards (JAN, JANTX, JANTXV). Electrical characteristics include a maximum impedance of 30 Ohms at 20 mA test current, a maximum reverse leakage of 60 µA at 1.0 V, and a temperature coefficient of -0.080 %/°C at 25°C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction within hermetically sealed glass DO-35 packages
• Military qualification per MIL-PRF-19500/127 for JAN, JANTX, and JANTXV reliability levels
• Inherently radiation hard design compliant with Microsemi MicroNote 050
• ESD non-sensitive performance verified by MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation across broad temperature and current ranges
• Reference voltage generation in military and aerospace circuits
• Protection against overvoltage transients in harsh environments

Single Zener Diodes Procurement Notes

Verify the specific reliability level required (JAN, JANTX, or JANTXV) as these are distinct part numbers within the same series. Confirm that the TR suffix correctly denotes tape and reel packaging per EIA-296 standards. Ensure the application environment does not require RoHS compliance, as this specific suffix combination indicates a non-RoHS compliant commercial grade version.

Single Zener Diodes Selection Notes

Select this component when a stable 2.7 V reference is needed in high-reliability applications requiring radiation hardness. The DO-35 package supports flexible axial mounting. Consider the negative temperature coefficient for thermal compensation requirements. Verify derating curves if operating near the maximum junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N4370A-1 through 1N4372A-1 series of 500 mW Zener regulators. These devices provide voltages from 2.4 to 3.0 V with standard 5% tolerances. They share the same physical package and general electrical architecture as the broader 1N746A-1 through 1N759A-1 family, differing primarily in breakdown voltage specifications.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4371A variants with matching suffixes for reliability and packaging. Cross-reference with 1N750A-1 equivalents if tighter voltage tolerances are acceptable.