1EZ100D2/TR8

Overview

The Microsemi Corporation 1EZ100D2/TR8 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 100 V with a tight tolerance of ±2%. The device is rated for a maximum power dissipation of 1.19 W and operates within an extended temperature range from -65°C to 150°C. Packaged in the DO-204AL (DO-41) axial leaded format, it utilizes a plastic epoxy body. The component is supplied in tape and reel packaging and is currently classified as obsolete by the manufacturer.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the 100 V nominal breakdown voltage.
• Capable of handling high thermal loads with a 1.19 W maximum power dissipation rating.
• Engineered for extreme environmental reliability, supporting operation from -65°C to 150°C.
• Constructed with a robust plastic epoxy encapsulation in a standard axial DO-204AL package.

Applications

• Precision voltage reference circuits requiring stable 100 V levels.
• Overvoltage protection stages in industrial control systems.
• Power supply output regulation and clamping applications.
• High-reliability aerospace and defense electronic assemblies.

Procurement Notes

This component is officially listed as End-of-Life (EOL) by Microsemi Corporation. Procurement must focus on verifying the authenticity of remaining stock or surplus inventory from authorized distributors. Buyers should confirm the specific manufacturing date code and ensure the part matches the exact suffix /TR8 for tape-and-reel configuration. Due to the obsolete status, long-term availability cannot be guaranteed, making verification of source legitimacy critical before acquisition.

Selection Notes

Select this part when a highly accurate 100 V Zener voltage is required alongside significant power handling capabilities. The ±2% tolerance distinguishes it from standard 5% variants, making it suitable for precision instrumentation. Engineers should consider the 1.19 W power rating and wide temperature range (-65°C to 150°C) for harsh environment deployments. The DO-204AL package facilitates through-hole mounting, which may be preferred for mechanical stability in vibration-prone applications compared to surface-mount alternatives.

Part Context

The 1EZ100D2 belongs to Microsemi's broader family of high-power Zener diodes, specifically engineered for demanding voltage regulation tasks. This series typically offers higher power dissipation than standard small-signal Zeners, allowing for robust performance in power electronics. The 'D2' suffix indicates the tighter ±2% tolerance band, while the '/TR8' denotes the specific tape-and-reel packaging format used for automated assembly processes.

Replacement Considerations

As the 1EZ100D2/TR8 is obsolete, direct replacements are not explicitly confirmed in public documentation. Designers should evaluate equivalent 100 V, 1.19 W Zener diodes with ±2% tolerance in the DO-204AL package from other manufacturers. Verify that any substitute meets the -65°C to 150°C operating temperature range and maintains compatible knee impedance characteristics for the specific circuit application.