1N4688UR-1

Overview

The 1N4688UR-1 is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device has a maximum power dissipation rating of 500 mW and utilizes a DO-213AA (SOD-80/MELF-2) surface-mount package. It is constructed from silicon and is hermetically sealed in glass.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Surface mount MELF-style package design
• Single independent Zener diode configuration

Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm hermetic sealing status and lead finish specifications. Ensure the DO-213AA footprint matches the PCB design requirements. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a hermetically sealed, surface-mount Zener diode with a 4.7 V breakdown voltage is required. Consider the 500 mW power rating and ±5% tolerance limits during circuit design. Verify compatibility with automated assembly processes due to the MELF package style.

Part Context

This component belongs to the 1N4688 series of single Zener diodes produced by Microchip Technology (formerly Microsemi). The series offers various voltage options within the same hermetically sealed glass package format, providing consistent performance characteristics across different voltage ratings for precision analog applications.

Replacement Considerations

Direct substitutes include other manufacturers' hermetically sealed Zener diodes in the DO-213AA package with identical 4.7 V and 500 mW ratings. Verify electrical parameters such as impedance and leakage current before substitution.