FST12040

Diode Arrays Overview

The FST12040 is a silicon power Schottky diode housed in a TO-249AB package. It features an average forward current rating of 120 A and a repetitive peak reverse voltage of 40 V. The device supports a maximum instantaneous forward voltage of 0.70 V at Tj = 150 °C and offers a peak forward surge current capability of 1000 A per leg. Thermal resistance from junction to case is rated at 0.80 °C/W per leg, with an operating temperature range spanning from -55 °C to +150 °C.

Diode Arrays Feature Summary

• High surge current capability for robust transient handling
• Isolated terminal configuration to the mounting plate
• Non-ESD sensitive design for simplified assembly

Diode Arrays Applications

• DC-DC converter circuits
• Free-wheeling rectification in motor drives
• Power supply output rectification

Diode Arrays Procurement Notes

Verify the specific part marking against the datasheet to confirm the 40 V reverse voltage rating. Ensure the thermal interface material matches the specified junction-to-case thermal resistance requirements. Confirm that the TO-249AB footprint aligns with the provided dimensional tolerances for proper chassis mounting.

Diode Arrays Selection Notes

Select this component when a high-current Schottky rectifier with low forward voltage drop is required. The 40 V rating suits low-voltage DC bus applications. Consider the 120 A continuous current capacity and the isolated plate feature for heatsink integration in compact power modules.

Diode Arrays Part Context

This component belongs to the FST120xx series of silicon Schottky diodes from GeneSiC Semiconductor. The series includes variants with different reverse voltage ratings, such as 20 V and 30 V options, all sharing the same 120 A current rating and TO-249AB package form factor for interchangeability in current-limited designs.

Diode Arrays Replacement Considerations

FST12020 (20 V), FST12030 (30 V), FST12035 (35 V). These share identical current and thermal characteristics but differ in reverse voltage blocking capability.