1N4757AUR/TR

Overview

The 1N4757AUR/TR is a surface mount Zener diode manufactured by Microchip Technology. It operates with a nominal voltage of 51V and maintains a standard tolerance of ±5%. The device dissipates 1W of power and utilizes the DO-213AB (MELF) glass package. It is designed for high-density applications requiring low parasitic effects and offers hermetic sealing suitable for high-reliability environments.

Feature Summary

• Surface mountable design in a JEDEC DO-213AB outline
• Hermetically sealed glass construction for reliability
• Electrically equivalent to registered 1N4757A axial parts

Applications

• High density voltage regulation circuits
• Low parasitic requirement applications
• High reliability systems per source control drawings

Procurement Notes

Verify the specific manufacturer designation, as this part number appears in databases associated with both Microchip Technology and Microsemi. Confirm RoHS compliance status and exact packaging quantities directly with the supplier or official datasheet before procurement to ensure alignment with project requirements.

Selection Notes

Select this component when a surface mount solution is required that matches the electrical characteristics of traditional axial Zener diodes. The DO-213AB package facilitates automated assembly while providing hermetic protection. Ensure the 51V rating aligns with the circuit's regulation needs and that the 1W power dissipation capacity is sufficient for the operating environment.

Part Context

This component belongs to the series of surface mountable 1-watt Zener diodes. These devices are designed to be electrically equivalent to the 1N4728A through 1N4764A registration in the DO-41 package but conform to the JEDEC surface mount outline DO-213AB. This allows for direct replacement in designs transitioning from through-hole to surface mount technologies.