1N4682UR-1

Overview

The Microchip Technology 1N4682UR-1 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 2.7 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 0.5 W (500 mW). It utilizes a DO-213AA package, also known as MELF-2, which is a hermetically sealed glass axial leadless component. The diode is unidirectional and operates as a single element.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Surface mount compatible MELF-2 form factor
• Temperature compensated voltage regulation characteristics

Applications

• Voltage reference circuits requiring stable low-voltage regulation
• Protection against overvoltage transients in sensitive electronic systems
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix UR-1 to confirm the hermetic seal status and glass MELF packaging. Ensure compatibility with DO-213AA footprint requirements. Confirm that the 2.7V Zener voltage aligns with circuit design specifications. Check for RoHS compliance status if required by assembly standards. Validate manufacturer documentation for thermal management guidelines during soldering processes.

Selection Notes

Select this component when a hermetically sealed, surface-mount Zener diode is required for precise 2.7V regulation. The DO-213AA package offers robustness suitable for harsh environments. Consider the 0.5W power rating for thermal constraints. Verify that the ±5% tolerance meets the application's accuracy needs. Compare against standard plastic packages if hermetic sealing is not critical.

Part Context

This part belongs to the 1N468x series of Zener diodes manufactured by Microchip Technology, formerly Microsemi. The series provides various voltage options within the same hermetic MELF package family. These components are typically used in military, aerospace, and high-reliability industrial applications where long-term stability and environmental resistance are paramount.

Replacement Considerations

Direct substitutes include other hermetic MELF Zener diodes with identical 2.7V ratings and DO-213AA footprints. Verify pinout compatibility and thermal characteristics before substitution. Cross-reference with other manufacturers offering MIL-spec equivalent parts.