1EZ190D10/TR8

Overview

The Microsemi Corporation 1EZ190D10/TR8 is a silicon Zener diode housed in the DO-204AL (DO-41) axial leaded package. It provides a nominal Zener voltage of 190V with a tolerance of ±20%. The device has a maximum power dissipation rating of 1W and operates within a temperature range of -65°C to +150°C. Key electrical characteristics include a reverse leakage current of 500nA at 144.8V and a forward voltage drop of 1.2V at 200mA. The component is classified as obsolete.

Feature Summary

• Provides stable voltage regulation at a nominal 190V level for circuit protection applications.
• Capable of handling high DC currents and full power ratings when adequate heat dissipation is provided.
• Features a plastic encapsulated DO-41 package designed for through-hole mounting.

Applications

• Voltage regulation in electronic circuits
• Overvoltage protection components
• Reference voltage sources

Procurement Notes

This component is officially marked as obsolete by the manufacturer. Verification of availability requires checking distributor stock or secondary market suppliers. Confirm that the specific suffix matches the required tolerance and packaging format, as variations exist within the series. Ensure compliance with RoHS requirements if applicable, noting that non-compliant versions are documented.

Selection Notes

Select this part for applications requiring a 190V Zener reference with wide tolerance. Verify thermal management capabilities for 1W dissipation. Consider alternative packages or tighter tolerance variants from the same family if stricter voltage stability or different mounting styles are needed. Check for equivalent military screening levels if required.

Part Context

The 1EZ190D10/TR8 belongs to the Microsemi 1EZ series of axial-leaded Zener diodes. This series offers various voltage selections in the DO-41 plastic package. The 'TR8' suffix indicates tape and reel packaging. Other variants in the series differ by voltage rating, tolerance codes, and packaging options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult manufacturer obsolescence notices for recommended replacements or verify cross-reference data from authorized distributors.