1EZ190D5/TR12

Overview

The Microsemi Corporation 1EZ190D5/TR12 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 190 V with a tolerance of ±5%. The device has a maximum power dissipation rating of 3 W and operates within a junction temperature range of -65°C to +150°C. Packaged in the DO-41 axial leaded plastic housing, it exhibits a reverse leakage current of 500 nA at 144.8 V and a forward voltage drop of 1.2 V at 200 mA.

Feature Summary

• Provides stable voltage regulation across a wide operating temperature range
• Features high surge stress withstand capability suitable for demanding environments
• Utilizes a plastic encapsulated construction for reliable performance

Applications

• Voltage regulation circuits requiring 190 V reference
• Overvoltage protection systems
• General purpose electronic equipment power supplies

Procurement Notes

Verify component authenticity through authorized channels due to potential availability of non-compliant alternatives. Confirm specific suffix designations match exact electrical tolerances and package requirements. Review manufacturer documentation for any recent product change notices or lifecycle status updates prior to final procurement decisions.

Selection Notes

Select this component when a precise 190 V regulation point is required with moderate tolerance. Ensure adequate thermal management is provided to handle the full 3 W power dissipation rating under worst-case operating conditions. Verify that the axial leaded package fits the intended PCB layout constraints.

Part Context

This part belongs to the 1EZ series of axial-leaded Zener diodes manufactured by Microsemi. The series offers various voltage selections from 3.9 to 200 volts in a standard DO-41 plastic package. These components are JEDEC registered and provide flexible mounting options for through-hole assembly in commercial and industrial electronics.

Replacement Considerations

Equivalent parts include the 1N5942BPE3/TR12 and MV1EZ120DTR. Verify pinout compatibility and ensure replacement devices meet the same voltage and power specifications.