1N4711UR-1

Overview

The Microchip Technology 1N4711UR-1 is a surface mount Zener diode designed for voltage regulation applications. It operates within the 1N4678 through 1N4717 series, offering a nominal Zener voltage of 27V with a standard tolerance of plus or minus 5%. The device features a power dissipation rating of 0.5W and utilizes a DO-213AA package. It incorporates an internal metallurgical bond between the metal slugs and silicon die to ensure high reliability. The component supports screening in reference to MIL-PRF-19500 standards.

Feature Summary

• Surface mount equivalent of the JEDEC registered 1N4678 through 1N4717 axial-leaded series
• Internal metallurgical bond construction for enhanced structural integrity
• Available with screening options referencing MIL-PRF-19500 military specifications

Applications

• Voltage regulation circuits requiring surface mount technology
• High-reliability electronic systems subject to military specifications
• General purpose voltage reference applications

Procurement Notes

Verify that the specific order includes the UR-1 suffix to confirm the surface mount DO-213AA package and internal metallurgical bond construction. Confirm whether commercial versions or MIL-PRF-19500 screened variants are required, as availability depends on the selected screening level. Ensure compatibility with existing PCB footprints designated for this specific package outline.

Selection Notes

Select this component when a 27V Zener voltage is needed in a compact surface mount form factor. The 0.5W power rating suits low-to-moderate current regulation tasks. Consider the internal metallurgical bond if mechanical robustness is critical. Verify that the standard 5% tolerance meets circuit requirements, noting that tighter tolerances may require different part numbers within the same series.

Part Context

This device belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5-watt glass surface mount Zener diodes manufactured by Microchip Technology. These components serve as direct surface mount replacements for traditional axial-leaded equivalents. The series covers a voltage range from 1.8 to 43 volts, providing designers with flexible options for various regulation needs while maintaining high reliability through specialized packaging techniques.

Replacement Considerations

Direct functional substitutes include other 1N4711 variants in the DO-213AA package from compatible manufacturers. For axial-leaded board layouts, the 1N4711 or 1N4678 series equivalents provide identical electrical characteristics. Verify pinout compatibility and thermal performance when transitioning between package types.