1N4741AUR/TR

Overview

The Microchip Technology 1N4741AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB MELF package. It provides an 11 V nominal Zener voltage with a standard ±5% tolerance. Electrical characteristics include a maximum dynamic impedance of 8 Ohms at a test current of 23 mA and a maximum reverse leakage current of 10 µA at 7.6 V. The device operates within a temperature range of -65°C to +175°C, features a forward voltage of 1.2 V (max) at 200 mA, and utilizes tin-lead or RoHS compliant annealed matte-tin plating for solderability.

Feature Summary

• Hermetically sealed glass MELF package designed for high reliability applications
• Surface mount configuration suitable for high density mounting requirements
• Inherently radiation hard per MicroNote 050 specifications

Applications

• Voltage regulation in high density electronic circuits
• High reliability systems requiring source control drawings
• Applications necessitating low parasitic performance

Procurement Notes

Verify that the ordering suffix TR corresponds to tape and reel packaging as specified in the datasheet. Confirm the presence of the A suffix indicates the required ±5% voltage tolerance. Ensure the component meets specific environmental or screening requirements if sourcing from restricted channels.

Selection Notes

Select this component when a surface mount solution is required for 11 V regulation. The DO-213AB package offers a leadless design ideal for space-constrained layouts. Consider the wide operating temperature range and radiation hardness for demanding environments.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount glass Zener diodes. It serves as the SMD equivalent to the JEDEC registered 1N4741A axial leaded device, maintaining electrical equivalence while adhering to the DO-213AB outline.

Replacement Considerations

The 1N4741A is the direct axial leaded equivalent. Surface mount alternatives include the SMAJ4741A series.