1EZ190D2/TR8

Overview

The Microsemi Corporation 1EZ190D2/TR8 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 190V with a tight tolerance of ±2%. The component is rated for a maximum power dissipation of 3W and operates within an extended temperature range from -65°C to +150°C. Housed in the DO-204AL (DO-41) axial through-hole package, it provides robust performance for high-voltage circuit protection and reference tasks.

Feature Summary

• High-power dissipation capability of 3W for stable operation under significant load conditions
• Tight voltage tolerance of ±2% ensuring precise regulation accuracy
• Extended thermal operating range suitable for demanding industrial environments

Applications

• Precision voltage reference circuits requiring high stability
• Overvoltage protection stages in industrial power supplies
• Clamping applications in high-voltage signal processing systems

Procurement Notes

Verify the specific suffix D2 indicates the ±2% tolerance variant distinct from standard versions. Confirm lead times as this component may be subject to end-of-life status or limited availability due to its specialized high-tolerance specification. Ensure compatibility with existing PCB footprints for the DO-204AL package before finalizing procurement orders.

Selection Notes

Select this component when a 190V regulation point is required with stricter tolerance than standard ±5% variants offer. The 3W power rating allows for higher current handling compared to 1W counterparts. Verify that the axial leaded package fits the mechanical constraints of the target assembly and that the operating environment remains within the specified -65°C to +150°C range.

Part Context

This part belongs to the Microsemi 1EZ series of high-reliability Zener diodes. The series is characterized by silicon planar technology and robust construction suitable for aerospace and military-grade applications. The 1EZ190D2/TR8 specifically denotes the 190V breakdown voltage with the D2 suffix indicating the tighter manufacturing tolerance band.