1N4741PE3/TR8

Overview

The Microchip Technology 1N4741PE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 11 V and a standard tolerance of ±10%. The device operates within a temperature range of -65°C to +150°C and features a maximum forward voltage of 1.2 V at 200 mA. Electrical characteristics include a test current of 23 mA, a maximum dynamic impedance of 8 Ohms, and a maximum reverse current of 5 µA at 5 V.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 11 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing through-hole assembly

Procurement Notes

Verify that the ordering suffix TR8 corresponds to the tape and reel packaging configuration as specified by the manufacturer. Confirm RoHS compliance status via the e3 suffix designation. Ensure the procurement documentation matches the specific JEDEC type number requirements for the intended application environment.

Selection Notes

Select this component when an 11 V Zener voltage with 10% tolerance is required in a 1 W power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the -65°C to +150°C operating range for environmental suitability and verify compatibility with standard through-hole manufacturing processes.

Part Context

This part belongs to the widely used 1N47xx series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The PE3 variant denotes a plastic encapsulated, RoHS-compliant version of the traditional 1N4741A specification, maintaining the same electrical performance in a modernized package format.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4741A or 1N4741 diodes in DO-41 packages. Surface mount equivalents such as SMAJ4741A are available for designs requiring SMT components. Verify that replacement parts meet the same 1 W power rating and 11 V nominal voltage specifications.