MBR1545CT/45

Diode Arrays Overview

The MBR1545CT/45 is a dual common-cathode Schottky rectifier from Vishay, rated for 45 V maximum DC reverse voltage and 15 A total average forward current (2 x 7.5 A per leg). It utilizes a center-tap TO-220AB package with the base connected to the common cathode. The device operates at junction temperatures up to 150 °C and features a low forward voltage drop of 0.57 V at 7.5 A and 125 °C. Key electrical characteristics include a peak non-repetitive surge current of 690 A and a maximum instantaneous reverse current of 15 mA at 125 °C.

Diode Arrays Feature Summary

• Optimized proprietary barrier technology ensures reliable operation at elevated junction temperatures up to 150 °C while maintaining low reverse leakage.
• Guard ring structure provides enhanced ruggedness against overvoltage conditions and improves long-term reliability.
• High purity, high temperature epoxy encapsulation delivers superior mechanical strength and moisture resistance.
• Designed specifically for industrial level applications requiring high frequency operation and low power loss.

Diode Arrays Applications

• Switching mode power supplies
• DC-to-DC converters
• Freewheeling diodes in inverter circuits
• Reverse battery protection

Diode Arrays Procurement Notes

Verify the specific ordering suffix when purchasing. The suffix 'PbF' indicates lead-free construction compliant with RoHS standards, whereas an absence of this suffix denotes standard production versions containing lead. Confirm that the required voltage rating matches the '45' designation within the part number to ensure compatibility with the 45 V maximum DC reverse voltage specification.

Diode Arrays Selection Notes

Select this component for designs requiring a dual common-cathode configuration suitable for center-tapped topologies. Ensure the thermal management strategy accounts for the specified thermal resistance values to maintain the junction temperature below the 150 °C maximum limit during continuous operation. Verify that the circuit's peak reverse voltage does not exceed the 45 V rating under all operating conditions.

Diode Arrays Part Context

This device belongs to the MBR15xxCT series of Schottky rectifiers manufactured by Vishay General Semiconductor - Diodes Division. The series encompasses various voltage ratings, including 35 V and 45 V options, sharing identical current ratings and physical packaging. The MBR1545CT variant specifically addresses applications demanding higher reverse voltage blocking capabilities compared to its lower-voltage counterparts.

Diode Arrays Replacement Considerations

• MBR1535CT

Diode Arrays FAQ

How is the internal connection configured in the TO-220AB package?

The device features a dual common-cathode configuration where the metal base of the package serves as the common cathode terminal for both internal diode elements.

What is the maximum allowable junction temperature for this rectifier?

The maximum junction temperature range extends up to 150 °C, allowing for reliable operation in high-temperature environments.

Does the device support avalanche energy handling?

Yes, the datasheet specifies a non-repetitive avalanche energy rating of 7 mJ per leg under defined test conditions.