DST2045C

Diode Arrays Overview

The Littelfuse DST2045C is a dual Schottky barrier rectifier featuring a common cathode configuration housed in a TO-220AB package. It provides a peak inverse voltage of 45V and an average forward current of 10A per leg, totaling 20A for the device. The component exhibits an ultra-low forward voltage drop of 0.58V at 10A and 25°C junction temperature. It supports a maximum junction temperature range from -55°C to +150°C with a thermal resistance of 3.0°C/W per leg.

Diode Arrays Feature Summary

• Ultra low forward voltage drop for high efficiency
• Guard ring structure for enhanced ruggedness and long-term reliability
• High frequency operation capability
• Common cathode configuration in TO-220AB package

Diode Arrays Applications

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

Diode Arrays Procurement Notes

Verify the specific package variant (TO-220AB) against design requirements. Confirm that the 45V reverse voltage rating aligns with circuit peak inverse voltage demands. Ensure thermal management solutions accommodate the 3.0°C/W junction-to-case thermal resistance for reliable operation within the specified temperature limits.

Diode Arrays Selection Notes

Select this component for applications requiring low conduction losses and high-frequency switching performance. The common cathode arrangement simplifies circuit layout for dual-leg configurations. Consider the 150A surge current capability for transient protection scenarios. Evaluate thermal dissipation needs based on the average forward current ratings under expected operating conditions.

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 application standards by offering high temperature stability and reduced leakage currents. The numbering system indicates the 20A total current capacity and 45V voltage rating.

Diode Arrays Replacement Considerations

Direct substitutes must match the 45V reverse voltage, 10A per leg current rating, and common cathode configuration. Verify compatibility with the TO-220AB footprint and ensure equivalent thermal resistance characteristics are maintained for proper heat dissipation in the target application.

Diode Arrays FAQ

What is the maximum repetitive peak reverse voltage?

The maximum repetitive peak reverse voltage (VRWM) is 45V.

How is the forward current rated?

The average forward current is rated at 10A per leg, resulting in a total device rating of 20A under a 50% duty cycle at 80°C case temperature.

What is the purpose of the guard ring?

The guard ring is included to enhance ruggedness and ensure long-term reliability of the device.