1N4248US

Overview

The Microchip Technology 1N4248US is a high-voltage rectifier diode designed for surface-mount applications. It features an Ultra Fast Recovery (UFR) characteristic with a fast reverse recovery time, making it suitable for high-frequency switching circuits. The device is housed in a MELF (Metal Electrode Leadless Face) package, providing robust mechanical stability and thermal performance. Key electrical specifications include a maximum repetitive peak reverse voltage of 800V and a continuous forward current rating of 1A. These parameters define its capability to handle significant voltage stress while conducting substantial current in compact electronic designs.

Feature Summary

• Ultra-fast recovery time optimized for high-frequency operation
• High voltage blocking capability up to 800V
• Surface-mount MELF package for automated assembly

Applications

• High-voltage rectification in power supplies
• Free-wheeling diodes in switching regulators
• Clamping diodes in high-speed digital circuits

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as tape-and-reel packaging may exist. Confirm RoHS compliance status directly with the manufacturer or authorized distributor, as historical data indicates potential non-compliance for certain batches. Ensure the source document explicitly lists the part number to avoid substitution errors with similar generic rectifiers.

Selection Notes

Select this component when a high-voltage, surface-mount rectifier with fast recovery characteristics is required. The 800V rating distinguishes it from standard low-voltage signal diodes. Consider the MELF package constraints regarding PCB footprint and thermal dissipation requirements compared to axial-lead alternatives. Validate that the 1A current rating meets the circuit's peak load demands without exceeding junction temperature limits.

Part Context

This part belongs to Microchip's discrete diode portfolio, specifically within the ultra-fast recovery rectifier category. It serves as a surface-mount alternative to traditional through-hole high-voltage diodes. The product line emphasizes reliability and performance in industrial and consumer electronics where space constraints and switching speed are critical design factors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with equivalent 800V, 1A UFR diodes from other manufacturers only if their datasheets explicitly match the pinout and electrical specifications.