1EZ190D5E3/TR12

Overview

The Microsemi Corporation 1EZ190D5E3/TR12 is a single Zener diode with a nominal voltage of 190 V and a maximum power dissipation of 1 W. It features a ±5% tolerance and utilizes the DO-204AL (DO-41) axial through-hole package. The device operates within a temperature range of -65°C to 150°C. Key electrical parameters include a reverse leakage current of 500 nA at 144.8 V, a forward voltage of 1.2 V at 200 mA, and a maximum dynamic impedance of 1700 Ohms. It is supplied in tape and reel packaging.

Feature Summary

• Provides stable voltage regulation for high-voltage applications
• Capable of operation at full power rating with adequate heat sinking
• Features moisture classification Level 1 requiring no dry pack

Applications

• Voltage regulation circuits
• High-voltage protection systems
• Power supply reference components

Procurement Notes

Verify component authenticity and datasheet alignment due to potential manufacturing transitions. Confirm RoHS compliance status as historical records indicate non-compliance for some variants. Check for End-of-Life notifications or obsolescence notices from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component for applications requiring precise 190 V regulation with tight 5% tolerance. Ensure the circuit design accommodates the 1 W power dissipation limit and the specific thermal requirements of the DO-41 package. Verify that the operating environment stays within the specified -65°C to 150°C temperature range.

Part Context

This part belongs to the 1EZ series of axial-leaded Zener diodes manufactured by Microsemi. The series offers various voltage selections with 5% tolerances in the DO-41 plastic package. These components are designed for high DC currents and full power ratings when properly heat-sunk, serving as reliable regulation elements in discrete semiconductor applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.