SM4937-TP

Single Diodes Overview

The SM4937-TP is a 1 Amp fast recovery rectifier from the SM4933–SM4937 series by Micro Commercial Components. It features a maximum repetitive peak reverse voltage of 600V and an RMS voltage rating of 420V. The device operates with a maximum DC blocking voltage of 600V and supports an average forward current of 1.0A at 55°C ambient temperature. Electrical characteristics include a maximum instantaneous forward voltage of 1.3V at 1.0A, a maximum reverse recovery time of 200ns, and a typical junction capacitance of 15pF. It utilizes a DO-214AC (SMA) surface-mount package.

Single Diodes Feature Summary

• Metalurgically bonded construction for robust mechanical integrity
• Fast switching capability with low leakage current
• Lead-free finish compliant with RoHS standards

Single Diodes Applications

• High-frequency switching power supplies
• Free-wheeling diodes in inductive load circuits
• General-purpose rectification in consumer electronics

Single Diodes Procurement Notes

Verify authenticity through authorized MCC distributors to avoid counterfeit components. Confirm the specific suffix requirements, such as -HF for halogen-free versions, against project specifications. Ensure the ordering part number matches the required voltage rating within the SM493x series. Check for any recent product change notifications regarding manufacturing updates or material substitutions before finalizing procurement orders.

Single Diodes Selection Notes

Select this component for applications requiring 600V reverse voltage blocking in a compact SMA package. Consider the 200ns reverse recovery time suitability for high-frequency operation. Evaluate thermal derating curves if operating near the 150°C maximum junction temperature limit. Compare against alternative fast recovery diodes if lower forward voltage drop or higher surge current capacity is required for the specific circuit design.

Single Diodes Part Context

This component belongs to the SM4933 through SM4937 family of 1 Amp fast recovery rectifiers manufactured by Micro Commercial Components. The series offers varying voltage ratings from 50V to 600V while maintaining consistent current handling and package dimensions. These devices are designed for surface-mount assembly using the DO-214AC footprint, providing a standardized solution for modern PCB layouts requiring reliable rectification.

Single Diodes Replacement Considerations

Direct substitutes within the same MCC series include SM4933-TP through SM4936-TP, provided their lower voltage ratings meet the circuit requirements. Cross-brand replacements must match the 1A current, 600V reverse voltage, and SMA package constraints. Verify that alternative parts exhibit comparable reverse recovery times and forward voltage characteristics to ensure circuit performance parity.

Single Diodes FAQ

What is the maximum reverse recovery time for the SM4937-TP?

The maximum reverse recovery time is specified as 200ns under test conditions of IF=1.0A and VR=30V.

Does the SM4937-TP support halogen-free compliance?

Yes, halogen-free versions are available by adding the '-HF' suffix to the part number, resulting in SM4937-TP-HF.