30ST420U

Ptc Resettable Fuses Overview

The Littelfuse Inc. 30ST420U is a high-power Schottky Rectifier designed for demanding power conversion applications. This component features a 30-ampere average forward rectified current rating and a 200-volt maximum repetitive peak reverse voltage capability. It utilizes a single-phase, half-wave configuration with a standard DO-201AB (DO-27) axial leaded package. The device is engineered to provide low forward voltage drop characteristics, which contributes to improved system efficiency by reducing conduction losses during operation.

Ptc Resettable Fuses Feature Summary

• High surge current handling capability for robust protection against transient events
• Low forward voltage drop design to minimize power dissipation and heat generation
• Molded epoxy case provides mechanical stability and environmental resistance

Ptc Resettable Fuses Applications

• DC-to-DC converter circuits
• Free-wheeling diode applications in motor drives
• Power supply output rectification stages

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix matches the required RoHS compliance status and tape-and-reel or bulk packaging format. Confirm that the thermal management requirements align with the specified junction temperature limits under your intended operating conditions. Ensure the lead form factor corresponds to the designated DO-201AB package dimensions for proper PCB mounting.

Ptc Resettable Fuses Selection Notes

Select this component when the circuit requires a 200V blocking voltage and up to 30A continuous current capacity. Consider the thermal resistance characteristics of the DO-201AB package relative to the expected ambient temperature. Evaluate the reverse recovery time specifications if the application involves high-frequency switching scenarios where fast recovery is critical for maintaining efficiency.

Ptc Resettable Fuses Part Context

This part belongs to the ST series of ultra-fast Schottky rectifiers from Littelfuse. These devices are characterized by their ability to operate at high frequencies while maintaining low leakage currents. The series is commonly utilized in industrial and commercial power supplies where reliability and compact size are prioritized over traditional silicon PN-junction diodes.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse cross-reference documentation for verified equivalent part numbers. Ensure any substitute maintains identical voltage and current ratings along with compatible package dimensions. Verify that the replacement device meets the same regulatory compliance standards required for the original assembly.