2EZ190D2/TR8

Single Zener Diodes Overview

The Microsemi Corporation 2EZ190D2/TR8 is a silicon Zener diode with a nominal voltage of 190 V and a tolerance of ±2%. It operates in a DO-41 axial leaded package. The device provides steady-state power dissipation of 2 watts at lead temperatures below 60°C, or 3.0 watts at 25°C ambient. Electrical characteristics include a maximum reverse current of 0.5 µA at 144.8 V and a maximum Zener impedance of 825 Ohms. It withstands a non-recurrent surge current of 10 A.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation within tight manufacturing tolerances
• Capable of handling high DC currents when adequately heat sunk
• Withstands electrical surge stresses during operation
• Available in tape and reel packaging for automated assembly

Single Zener Diodes Applications

• Voltage regulation over broad operating current ranges
• Voltage reference circuits requiring stable potential
• Overvoltage protection for sensitive electronic components

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR8' to confirm tape and reel packaging configuration. Ensure the component meets required military screening levels if applicable, as standard parts differ from screened equivalents. Confirm RoHS compliance status based on the specific ordering code variant. Validate thermal management requirements against the specified derating curves for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a 190 V regulation point with ±2% accuracy is required. Consider the DO-41 package size for through-hole mounting constraints. Evaluate thermal resistance parameters to ensure adequate heat sinking for full power dissipation. Compare surge current ratings against expected transient conditions in the circuit design.

Single Zener Diodes Part Context

This part belongs to the 2EZ series of 2-watt silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers voltages from 3.6 V to 200 V. The 'D2' suffix denotes the ±2% tolerance level, while 'TR8' indicates the specific tape and reel packaging format used for surface mount automation.

Single Zener Diodes Replacement Considerations

Equivalent parts include 2EZ190D5 for ±5% tolerance or 2EZ190D1 for ±1% tolerance within the same series. Surface mount alternatives are available in SMBJ or SMBG packages.