SS34AF

Single Diodes Overview

The SS34AF is a Schottky barrier rectifier manufactured by SMC Diode Solutions, designed for surface mount applications in the SMAF (DO-221AC) package. It features a maximum repetitive peak reverse voltage of 60 V and an average forward rectified current of 3 A. The device exhibits a typical forward voltage of 700 mV at 3 A and a maximum reverse leakage current of 500 µA at 60 V. Junction capacitance is specified as 300 pF at 4 V and 1 MHz. The component operates within a junction temperature range of -55°C to 125°C.

Single Diodes Feature Summary

• Utilizes metal-silicon junction technology with majority carrier conduction for low forward voltage drop and minimal power loss.
• Plastic packaging meets Underwriters Laboratories flammability classification 94V-0 standards.
• Designed for high efficiency operation with low thermal resistance characteristics.

Single Diodes Applications

• DC/DC converters
• Free-wheeling diodes in switching circuits
• Secondary rectification in power supplies
• Polarity protection circuits

Single Diodes Procurement Notes

Verify the specific suffix 'AF' against the manufacturer's datasheet to confirm exact electrical tolerances and marking codes, as variations may exist within the product family. Ensure the SMAF package footprint matches the design layout. Confirm RoHS compliance status if required by project specifications. Cross-reference the DigiKey part number 1655-SS34AFTR or equivalent distributor codes for accurate sourcing channels.

Single Diodes Selection Notes

Select this component when a 60 V rating is required instead of the standard 40 V variant found in similar SMA packages. The SMAF form factor offers a compact solution compared to larger DO-214AB packages while maintaining 3 A current handling. Consider the 700 mV forward voltage drop for efficiency calculations in low-voltage output applications. Verify thermal management requirements for the SMAF package under continuous load conditions.

Single Diodes Part Context

The SS34AF belongs to the SS3x series of Schottky rectifiers from SMC Diode Solutions, which provides various voltage ratings within the same SMAF package. This series is engineered for general-purpose rectification in space-constrained designs. The manufacturer emphasizes reliability and consistency in their silicon Schottky offerings for industrial and consumer electronics markets.

Single Diodes Replacement Considerations

The SS34F-HF from Comchip Technology is a comparable 40 V, 3 A Schottky diode in the SMAF-2 package. Verify that the 40 V rating of the alternative is sufficient for the application's peak inverse voltage requirements before substitution.

Single Diodes FAQ

What is the maximum operating junction temperature for the SS34AF?

The maximum operating junction temperature is 125°C.

Does the SS34AF use minority or majority carrier conduction?

It utilizes majority carrier conduction via a metal-silicon junction, characteristic of Schottky diodes.