1N4689UR-1/TR

Overview

The Microchip Technology 1N4689UR-1/TR is a single silicon Zener diode housed in the DO-213AA (MELF-2) surface-mount package. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5% and a maximum power dissipation of 0.5 W. The device operates within a junction temperature range of -65°C to +175°C and exhibits a maximum reverse leakage current of 10 µA at 3 V.

Feature Summary

• Hermetically sealed glass MELF construction for environmental stability
• High-temperature operation capability up to 175°C junction temperature
• Unidirectional single diode configuration

Applications

• Voltage regulation in high-reliability circuits
• Overvoltage protection for sensitive components
• Reference voltage generation in harsh environments

Procurement Notes

Verify the specific suffix UR-1/TR against official Microchip documentation to confirm tape-and-reel packaging and exact electrical tolerances. Ensure the DO-213AA package footprint matches the design layout. Cross-reference datasheet revisions to confirm compliance with current environmental standards before finalizing procurement orders.

Selection Notes

Select this component when a hermetically sealed, high-temperature Zener diode is required for space-constrained surface-mount designs. The 5.1 V rating suits standard logic level protection. Verify that the 0.5 W power dissipation meets thermal requirements under worst-case operating conditions.

Part Context

This part belongs to the Microchip single Zener diode family utilizing the DO-213AA MELF package. It shares characteristics with other hermetic variants like the MV1N4689UR-1 but differs in specific manufacturing lot or testing criteria defined by the TR suffix for reel packaging.

Replacement Considerations

Direct substitutes include the MQ1N4689CUR-1 for tighter tolerance requirements or the 1N4689E3 for leaded alternatives. Verify pinout compatibility and thermal performance before substitution.