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The Microchip Technology 1N5802URS is a silicon Schottky barrier rectifier designed for surface-mount applications. It features a maximum repetitive peak reverse voltage of 40 V and an average forward rectified current of 3 A. The device utilizes a hermetically sealed SQ-MELF (D-5B) package, ensuring reliability in harsh environments. Key electrical characteristics include a low forward voltage drop and fast switching capabilities with negligible reverse recovery time, making it suitable for high-frequency power conversion circuits.
Verify the specific suffix 'URS' against the manufacturer's official datasheet to confirm package type and qualification level. Ensure compatibility with surface-mount assembly processes. Check for RoHS compliance status as military or space-grade variants may differ from commercial standards. Confirm lead times and availability through authorized distributors, as supply levels for specialized hermetic packages can fluctuate.
Select this component when a hermetically sealed surface-mount Schottky rectifier is required for high-reliability applications. Compare the 40 V rating and 3 A current capacity against circuit requirements. Consider the D-5B footprint constraints during PCB layout. Evaluate thermal management needs based on the forward voltage drop at expected operating currents.
The 1N5802 series belongs to Microchip's line of power Schottky rectifiers, offering superior performance over standard PN junction diodes due to lower forward voltage and faster switching. The URS variant specifically denotes a surface-mount hermetic package, distinguishing it from axial leaded versions like the 1N5822. This family is engineered for efficiency in low-voltage, high-frequency power electronics.
Direct pin-compatible replacements must match the SQ-MELF/D-5B package and hermetic seal. Verify that substitute parts meet the 40 V reverse voltage and 3 A average current specifications. Ensure equivalent forward voltage and reverse leakage characteristics to maintain circuit performance. Cross-reference with other manufacturers' hermetic Schottky diodes if Microchip stock is unavailable.