3EZ190D/TR8

Single Zener Diodes Overview

The Microsemi Corporation 3EZ190D/TR8 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 190V with a tolerance of ±20%. The device is rated for a maximum power dissipation of 3W and utilizes the DO-41 (DO-204AL) axial leaded plastic package. It is supplied in tape and reel packaging, facilitating automated surface-mount or through-hole assembly processes.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 190V reference level
• Capable of handling high DC currents up to its full 3W power rating with adequate heat sinking
• Utilizes a robust DO-41 plastic encapsulated axial leaded package

Single Zener Diodes Applications

• High-voltage power supply regulation circuits
• Overvoltage protection stages in industrial equipment
• Reference voltage generation in test and measurement instrumentation

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR8' confirms the tape and reel packaging format required for your assembly line. Confirm that the ±20% tolerance aligns with your circuit design requirements, as tighter tolerances are available via different suffixes. Ensure the component meets any necessary environmental compliance standards for your target market, noting that older Microsemi parts may not be RoHS compliant.

Single Zener Diodes Selection Notes

Select this component when a 190V regulation point is required with relaxed tolerance constraints. The 3W power rating allows for significant current handling compared to lower-power variants. Consider the DO-41 package size for board space availability. Verify thermal management capabilities if operating near the maximum power dissipation limit in enclosed environments.

Single Zener Diodes Part Context

This part belongs to the Microsemi 3EZ series of axial-leaded Zener diodes. This series offers a wide range of voltage selections from 3.9V to 200V within the same DO-41 package footprint. The 'D' suffix typically indicates a 20% tolerance, distinguishing it from tighter tolerance variants like 'D5' (5%) or 'D2' (2%).

Single Zener Diodes Replacement Considerations

Check for direct equivalents from other manufacturers offering 190V, 3W, ±20% Zener diodes in DO-41 packages. Verify pinout compatibility and thermal characteristics before substitution.