FST12020

Diode Arrays Overview

The GeneSiC Semiconductor FST12020 is a silicon power Schottky diode module housed in a TO-249AB package. It features two independent legs with an average forward current of 120 A per leg and a repetitive peak reverse voltage of 20 V. The maximum instantaneous forward voltage is 0.70 V, while the peak forward surge current reaches 1000 A for an 8.3 ms half-sine wave. Thermal resistance from junction to case is 0.80 °C/W per leg. The device operates within a temperature range of -55 °C to +150 °C.

Diode Arrays Feature Summary

• High surge capability with robust non-repetitive forward current handling
• Electrically isolated structure between the semiconductor elements and the mounting plate
• Not sensitive to electrostatic discharge events

Diode Arrays Applications

• High-frequency switching mode power supplies
• Free-wheeling rectification circuits
• Polarity protection applications

Diode Arrays Procurement Notes

Verify the specific part marking against the datasheet documentation to confirm the 20 V rating and TO-249AB package configuration. Ensure that thermal management designs account for the specified junction-to-case thermal resistance values under actual operating conditions. Confirm that the application environment remains within the stated temperature limits.

Diode Arrays Selection Notes

Select this component when high efficiency at low voltages is required due to its low forward voltage drop. The dual-leg configuration allows for parallel operation or bridge arrangements within a single compact footprint. Consider the thermal performance relative to the available heatsinking capacity for sustained 120 A loads.

Diode Arrays Part Context

This device belongs to the FST120xx series of silicon Schottky modules manufactured by GeneSiC Semiconductor. The series includes variants with different reverse voltage ratings, such as the FST12030 and FST12040, which share identical current and thermal characteristics but differ in blocking voltage capabilities.

Diode Arrays Replacement Considerations

Compatible substitutes include the FST12030 and FST12040 from the same manufacturer series, provided the circuit voltage requirements do not exceed their respective ratings.