1N4730AUR/TR

Overview

The Microchip Technology 1N4730AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 3.9 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features hermetically sealed construction for high reliability applications.

Feature Summary

• Hermetically sealed glass MELF package suitable for high density mounting
• Electrically equivalent to JEDEC registered axial leaded series
• Inherently radiation hard per MicroNote 050
• Leadless design ideal for low parasitic requirements

Applications

• Voltage regulation in high density circuit designs
• High reliability applications requiring source control drawings
• Low parasitic requirement circuits

Procurement Notes

Verify that the ordering suffix 'TR' indicates tape and reel packaging as specified in the datasheet. Confirm RoHS compliance status by checking for the 'e3' suffix, as the base part number may not include it. Ensure the component meets specific military screening requirements if applicable, which necessitates different prefixes.

Selection Notes

Select this component when a surface mount solution is required for 1W Zener regulation. It serves as a direct replacement for the DO-41 axial leaded version while offering lower parasitics. Consider the hermetic seal for harsh environments and verify thermal derating curves for FR4 PCB mounting conditions.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. It is electrically similar to the traditional 1N4728A through 1N4764A registration but utilizes the JEDEC surface mount outline DO-213AB. The series offers extensive voltage selection from 3.3V to 100V.

Replacement Considerations

The MLL4730A is an alternate name for this series. Surface mount equivalents are available in SMAJ packages. Axial leaded versions exist as 1N4730A.