1N4946-TP

Overview

The MCC 1N4946-TP is a 1 Amp fast recovery rectifier diode housed in the DO-41 axial leaded package. It features a maximum repetitive peak reverse voltage of 600V and an average forward rectified current rating of 1.0A at 55°C ambient temperature. The device exhibits a maximum instantaneous forward voltage of 1.3V at 1.0A and a maximum DC reverse current of 5.0μA at rated voltage and 25°C junction temperature. Electrical characteristics include a typical junction capacitance of 15pF measured at 1.0MHz with 4.0V reverse bias, and a maximum reverse recovery time of 250ns under specified test conditions.

Feature Summary

• Fast switching capability designed for high efficiency applications
• Low leakage current performance across operating temperatures
• Glass passivated junction construction for enhanced reliability

Applications

• High frequency rectifier circuits
• General purpose rectification in power supplies
• Free-wheeling diodes in inductive load protection

Procurement Notes

Verify component authenticity by purchasing exclusively from Micro Commercial Components or their authorized distributors to ensure traceability and quality standards. Confirm that the ordering suffix matches the required packaging format, such as -TP for tape and reel or -BP for bulk carton quantities. Check for specific environmental compliance requirements if halogen-free variants are necessary for the design.

Selection Notes

Select this component when a 600V blocking voltage and 1A continuous current capacity are required within a standard axial leaded form factor. Ensure the application operates within the specified thermal limits, noting the derating curve for ambient temperatures exceeding 55°C. Verify that the 250ns reverse recovery time aligns with the switching speed requirements of the target circuit topology.

Part Context

This part belongs to the 1N4942 through 1N4948 series of fast recovery rectifiers manufactured by Micro Commercial Components. The series shares common physical dimensions and electrical parameters except for the reverse voltage ratings, which range from 200V to 1000V. The 1N4946 specifically targets applications requiring 600V isolation while maintaining fast switching characteristics suitable for general-purpose rectification tasks.

Replacement Considerations

Consult official datasheets for cross-reference compatibility with other manufacturers' 1N4946 equivalents. Verify pinout orientation, package dimensions, and electrical specifications match before substitution.