1N4763AUR

Overview

The Microchip Technology 1N4763AUR is a surface-mountable 1.0 W glass Zener diode designed for high-density applications requiring low parasitic effects. It operates within the DO-213AB (MELF-2) package and provides a nominal Zener voltage of 91 V with a standard tolerance of ±5%. The device features a maximum power dissipation of 1 W, a reverse leakage current of 100 nA, and a Zener impedance of 250 Ohms at a test current of 2.8 mA. It supports an operating temperature range from -65°C to +175°C and includes a forward voltage of 1.2 V at 200 mA.

Feature Summary

• Hermetically sealed glass construction ensures reliability in demanding environments.
• Surface mount design meets JEDEC outline DO-213AB for compact integration.
• High thermal stability allows operation up to +175°C junction temperature.

Applications

• Voltage regulation in high-density circuit boards
• Clamping circuits requiring low parasitic capacitance
• High-reliability systems specified by source control drawings

Procurement Notes

Verify that the specific part number suffix matches the required hermetic sealing and lead finish specifications. Confirm compliance with relevant military or industrial standards if the application demands strict adherence to source control drawings. Ensure the ordering quantity aligns with manufacturer packaging constraints.

Selection Notes

Select this component when a 1 W surface-mount Zener diode with a 91 V breakdown voltage is required. The DO-213AB package is suitable for automated assembly processes. Consider the ±5% voltage tolerance and 250 Ohm impedance characteristics for precise regulation needs.

Part Context

This component belongs to the 1N47xxAUR series of 1-watt glass Zener diodes manufactured by Microchip Technology. These devices are electrically equivalent to their through-hole counterparts but utilize the DO-213AB surface mount outline. The series is engineered for applications where space constraints and parasitic performance are critical factors.

Replacement Considerations

The 1N4763AUR/TR is a parameter-equivalent alternative within the same product family. Verify package compatibility and electrical specifications before substitution.