SM4937A-TP

Single Diodes Overview

The SM4937A-TP is a 1.0 Amp fast recovery rectifier from Micro Commercial Components, housed in the DO-214AC (SMA) surface-mount package. It features a maximum repetitive peak reverse voltage of 600V and an average forward current rating of 1.0A. Key electrical specifications include a maximum DC blocking voltage of 600V, a maximum RMS voltage of 420V, and a peak forward surge current capability of 30A for an 8.3ms half-sine wave. The device exhibits a maximum reverse recovery time of 200ns at specified test conditions, with a typical junction capacitance of 15pF measured at 1.0MHz. Maximum instantaneous forward voltage is rated at 1.30V at 1.0A.

Single Diodes Feature Summary

• Metalurgically bonded construction ensures robust physical integrity.
• Epoxy formulation meets UL 94 V-0 flammability rating standards.
• Halogen-free 'Green' device composition compliant with environmental directives.
• Lead-free finish and RoHS compliance designation.

Single Diodes Applications

• High-frequency switching power supply circuits
• DC-to-DC converter output rectification
• Free-wheeling diode applications in inductive loads

Single Diodes Procurement Notes

Verify authenticity through authorized MCC distributors to avoid counterfeit components. Confirm the -TP suffix indicates tape-and-reel packaging containing 5,000 pieces per reel. Ensure storage conditions adhere to Moisture Sensitivity Level 1 requirements. Check for specific halogen-free status if required by project specifications, as standard variants may differ.

Single Diodes Selection Notes

Select this component for applications requiring high voltage blocking up to 600V with fast recovery characteristics. The SMA package suits space-constrained surface-mount designs. Consider thermal derating curves for ambient temperatures above 55°C. Verify that the 200ns reverse recovery time aligns with the switching frequency requirements of the target circuit design.

Single Diodes Part Context

This part belongs to the SM4933A through SM4937A series, which shares identical physical packages and general performance traits while varying only in maximum reverse voltage ratings. The series covers voltage ranges from 50V to 600V, allowing designers to select appropriate breakdown voltages within a standardized footprint family.

Single Diodes Replacement Considerations

Direct substitutes must match the 600V rating, 1A current capacity, and SMA package. Verify equivalent reverse recovery times and thermal resistance values. Cross-reference manufacturer-specific marking codes and pinout orientations to ensure compatibility with existing PCB layouts.

Single Diodes FAQ

What is the maximum thermal resistance from junction to lead?

The maximum thermal resistance from junction to lead is 30°C/W.

Does the device meet UL flammability standards?

Yes, the epoxy used in the construction meets the UL 94 V-0 flammability rating.