1N5288UR-1

Overview

The Microchip Technology 1N5288UR-1 is a current regulator diode designed for surface-mount applications. It operates within the DO-213AB (MELF) package and provides a maximum regulator current of 429 µA. The device supports a maximum peak operating voltage of 100 V with a maximum limiting voltage of 1.05 V. It features a minimum dynamic impedance of 4.1 mΩ and a minimum knee impedance of 1 mΩ. The component functions reliably across an extended temperature range from -65 °C to +175 °C, with a power dissipation rating of 500 mW.

Feature Summary

• Provides stable constant current regulation suitable for precision biasing circuits
• Utilizes hermetically sealed glass MELF construction for environmental robustness
• Supports high-temperature operation up to 175 °C junction temperature

Applications

• Precision current source generation in analog signal conditioning
• Biasing elements for transistors and active components
• Current limiting protection in sensitive electronic circuits

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm the surface-mount MELF configuration and military-grade specifications. Ensure compatibility with DO-213AB footprints during PCB layout. Confirm RoHS status and lead-free requirements prior to procurement, as variations exist within the product family.

Selection Notes

Select this component when a compact surface-mount solution is required for low-current regulation. Compare the 429 µA output against circuit requirements to ensure adequate drive capability. Evaluate the 100 V breakdown voltage against peak transient conditions in the application environment to prevent device failure.

Part Context

This part belongs to the 1N5288 series of current regulator diodes manufactured by Microchip Technology. It shares functional characteristics with through-hole variants like the 1N5288 but utilizes a different package format optimized for automated surface-mount assembly processes.

Replacement Considerations

Direct substitutes include other 1N5288 series parts with matching electrical parameters. Verify package compatibility when replacing through-hole versions with this surface-mount variant.