1F4

Overview

The 1F4 is a standard single diode manufactured by SMC Diode Solutions, designed for through-hole mounting in the R-1 axial package. It features a maximum DC reverse voltage (Vr) of 400 V and an average rectified current (Io) of 1 A. The component exhibits a forward voltage (Vf) of 1.3 V at 1 A and a reverse leakage current of 5 µA at 600 V. Its junction temperature range spans from -65°C to 150°C, with a reverse recovery time (trr) of 150 ns.

Feature Summary

• Through-hole axial construction in R-1 package
• High junction temperature capability up to 150°C
• Standard fast recovery characteristics

Applications

• General purpose rectification
• Power supply circuits
• Inverter freewheeling

Procurement Notes

Verify the specific manufacturer part number against official datasheets to ensure compatibility with design requirements. Confirm that the R-1 axial package dimensions match the PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the 400 V rating provides sufficient margin for the intended operating voltage.

Selection Notes

Select this component when a through-hole axial diode is required for 400 V applications. The 1 A current rating suits moderate power levels. Consider the 150 ns reverse recovery time for switching frequency limitations. Compare thermal performance and package size against surface-mount alternatives if space is constrained.

Part Context

The 1F4 belongs to the general-purpose diode category within SMC Diode Solutions' portfolio. It utilizes the R-1 axial leaded package, distinguishing it from surface-mount options like SMA or DO-214AC. This form factor supports automated insertion or manual soldering processes common in legacy or high-reliability designs.

Replacement Considerations

ES1J