DSTF40150C

Diode Arrays Overview

The Littelfuse DSTF40150C is a dual Schottky barrier rectifier featuring a common cathode configuration housed in an ITO-220AB package. It provides a peak inverse voltage of 150 V and supports a total average forward current of 40 A, with 20 A per leg at 70°C case temperature. The device exhibits ultra-low forward voltage drop, reaching up to 1.43 V at 20 A and 25°C junction temperature. It operates within a junction temperature range of -55°C to +150°C and offers high frequency switching capabilities suitable for demanding power applications.

Diode Arrays Feature Summary

• Ultra-low forward voltage drop for enhanced efficiency
• High junction temperature capability up to 150°C
• Guard ring structure for improved ruggedness and reliability
• Common cathode configuration in ITO-220AB package

Diode Arrays Applications

• Switching mode power supplies
• DC/DC converters
• Free-wheeling diodes
• Polarity protection circuits

Diode Arrays Procurement Notes

Verify the specific ordering suffix and marking code against the latest Littelfuse datasheet revision dated February 26, 2025. Confirm that the ITO-220AB package dimensions match your PCB footprint requirements. Ensure thermal management designs account for the specified junction-to-case thermal resistance values under DC operation conditions.

Diode Arrays Selection Notes

Select this component when designing systems requiring high-frequency operation with low conduction losses. The dual common cathode arrangement simplifies circuit topology for bridgeless or synchronous rectification applications. Evaluate thermal performance based on the 4.0 °C/W junction-to-case resistance to ensure reliable operation within the specified temperature limits.

Diode Arrays Part Context

This device belongs to the Littelfuse DST series of Ultra Low VF Schottky Barrier Rectifiers. The series is engineered to meet commercial and industrial standards by combining high temperature stability with reduced leakage currents. The part number indicates a 40 A total current rating and 150 V reverse voltage capability.

Diode Arrays Replacement Considerations

Direct substitutes include other Littelfuse DST series parts with matching voltage and current ratings, such as the DSTF40100C for lower voltage applications. Verify pinout compatibility and thermal characteristics before substituting with components from other manufacturers.

Diode Arrays FAQ

What is the maximum repetitive peak reverse voltage?

The maximum repetitive peak reverse voltage (VRWM) is 150 V.

How is the average forward current rated?

The average forward current is rated at 20 A per leg, totaling 40 A for the device, measured at a case temperature of 70°C with a rectangular waveform.

What is the isolation voltage capability?

The isolation voltage depends on mounting: 4500 V with clip mounting away from heatsink edges, 3500 V with clip mounting inside the heatsink, and 1500 V with screw mounting inside the heatsink.