1N4741PE3/TR12

Overview

The Microchip Technology 1N4741PE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 11 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a DO-41 axial lead package. Electrical characteristics include a maximum dynamic impedance of 8 Ω at a test current of 23 mA, a maximum reverse current of 5 μA, and a forward voltage of 1.2 V.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard PCB integration
• Constructed with void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation circuits
• Power supply protection
• Reference voltage generation

Procurement Notes

Verify that the ordering suffix matches the required specifications. Confirm the 'e3' designation indicates RoHS compliance and the 'TR12' suffix specifies tape and reel packaging. Ensure the component meets the necessary JEDEC registration standards and environmental classifications before finalizing procurement orders.

Selection Notes

Select this component when a 1-watt power dissipation rating and an 11 V Zener voltage are required. Consider the plastic encapsulation for lower thermal resistance compared to glass-body options. Verify that the ±5% voltage tolerance aligns with circuit requirements and that the axial lead format fits the mechanical design constraints.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers extensive voltage selection from 3.3 to 100 volts. These devices are JEDEC registered and available in various screening levels, including military options, though this specific part number represents the standard commercial plastic encapsulated version.

Replacement Considerations

Surface mount equivalents such as SMAJ4741A or MLL4741A are available. Other manufacturers produce compatible 1N4741A parts, but verify electrical parameters and package dimensions match the original design requirements.