1N4763AUR/TR

Overview

The Microchip Technology 1N4763AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB package. It provides a nominal Zener voltage of 91 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 5 μA at 76.0 V. Electrical characteristics include a test current of 2.8 mA, a maximum dynamic impedance of 250 Ω, and a maximum regulator current of 50 mA.

Feature Summary

• Hermetically sealed glass MELF package suitable for high reliability applications
• Surface mount design ideal for high density mounting with low parasitic requirements
• Inherently radiation hard per MicroNote 050
• ESD nonsensitive construction

Applications

• Voltage regulation over broad operating current and temperature ranges
• High density electronic circuit assembly
• Applications requiring hermetic sealing and source control drawing compliance

Procurement Notes

Verify that the ordering suffix TR indicates tape and reel packaging as specified in the datasheet. Confirm the presence of the e3 suffix for RoHS compliance if required by your manufacturing standards. Ensure the component meets the specific JEDEC outline DO-213AB dimensions for your PCB footprint. Cross-reference the manufacturer part number against the alternate MLL4763A designation if sourcing from legacy inventories.

Selection Notes

Select this component when a 1.0 W power dissipation rating is necessary for surface mount implementations. The 91 V Zener voltage fits within the series range of 3.3 V to 100 V. Consider the ±5% tolerance for standard regulation needs. The wide operating temperature range supports harsh environment deployment. Verify thermal resistance requirements against your FR4 PC board layout constraints.

Part Context

This device belongs to the 1N4728AUR through 1N4764AUR series of surface mount glass Zener diodes. It serves as the surface mount equivalent to the axial-leaded 1N4763A registration in the DO-41 package. The series offers standardized voltage tolerances and is available with tighter tolerances or military screening options via specific prefixes.

Replacement Considerations

The 1N4763A-TR from Vishay is an electrically similar alternative in the DO-41 package.