MBRB1545CTT4G

Diode Arrays Overview

The MBRB1545CTT4G is a Schottky Barrier Rectifier manufactured by onsemi, utilizing platinum barrier metal technology. It features a dual common cathode configuration housed in a D2PAK (TO-263) surface-mount package. The device supports a peak repetitive reverse voltage of 45 V and an average rectified forward current of 7.5 A per leg. Electrical characteristics include a maximum instantaneous forward voltage of 0.84 V at 15 A and 25°C, with a non-repetitive peak surge current capability of 150 A. It operates within a junction temperature range of -65°C to +175°C.

Diode Arrays Feature Summary

• Employs Schottky Barrier principle with platinum barrier metal for low forward voltage and high efficiency.
• Features guardring structure for enhanced stress protection and overvoltage robustness.
• Designed with a short heatsink tab for improved thermal conductivity compared to sheared alternatives.
• Compliant with UL 94 V-0 flammability standards for the epoxy molding compound.

Diode Arrays Applications

• Switching power supply converters
• Free-wheeling diodes in inductive load circuits
• Reverse battery protection systems

Diode Arrays Procurement Notes

Verify the specific ordering suffix against the manufacturer's current production status. The T4G suffix indicates tape and reel packaging, which differs from rail-packaged variants like CTG. Confirm that the component meets all necessary automotive qualification requirements if the SBRB prefix variant is required for unique site control changes. Ensure compliance with RoHS directives and Pb-free specifications during procurement.

Diode Arrays Selection Notes

Select this component for applications requiring low forward voltage drop to minimize power dissipation in high-frequency switching environments. The D2PAK package offers a thermal profile similar to TO-220 but enables automated surface-mount assembly. Evaluate the 45 V reverse voltage rating against peak transient voltages in the circuit to ensure adequate margin. Consider the 175°C junction temperature capability for high-temperature operational environments.

Diode Arrays Part Context

This device belongs to the MBRB series of Schottky Power Rectifiers designed for switch-mode power applications. It shares the same electrical specifications as the MBRB1545CTG but utilizes tape-and-reel packaging for high-volume manufacturing. The series is characterized by its use of platinum barrier metal to achieve superior performance metrics compared to standard silicon rectifiers.

Diode Arrays Replacement Considerations

The SBRB1545CTT4G serves as an automotive-grade equivalent with identical electrical parameters but requires PPAP capability verification. Cross-reference with MBRB1545CTG only if rail packaging is acceptable. Verify pinout compatibility when substituting with generic TO-263 Schottky diodes.

Diode Arrays FAQ

What is the difference between the MBRB and SBRB prefixes?

The SBRB prefix denotes devices qualified for automotive and other applications requiring unique site and control change requirements, including AEC-Q101 qualification and PPAP capability, whereas MBRB represents the standard commercial grade.

How does the D2PAK package affect thermal performance?

The D2PAK package provides a thermal resistance from junction to case of 2.0°C/W, allowing for efficient heat dissipation through the exposed copper tab, which is similar in size to the industry-standard TO-220 package.

Is the device suitable for high-frequency operation?

Yes, the Schottky Barrier principle with majority carrier conduction allows for high-frequency operation without the reverse recovery charge limitations associated with standard PN junction diodes.