MBR1040

Single Diodes Overview

The MBR1040 is a discontinued 10A Schottky Barrier Rectifier from Diodes Incorporated, part of the MBR1030–MBR1050 series. It features a TO-220AC case with a peak repetitive reverse voltage of 40V (implied by series naming convention relative to 30/35/45/50V variants, though specific 40V column is missing in provided text, the model name indicates this rating). The device offers an average rectified output current of 10A at +125°C case temperature and a non-repetitive peak forward surge current of 150A. Typical thermal resistance junction-to-case is 2.5°C/W. Forward voltage drop is 0.84V at 10A and +25°C, rising to 0.95V at +125°C. Peak reverse current is 0.1mA at +25°C and 25mA at +125°C.

Single Diodes Feature Summary

• Guard ring die construction for transient protection
• Low power loss and high efficiency design
• High surge capability for robust operation
• Lead-free finish compliant with RoHS directives

Single Diodes Applications

• Low voltage, high frequency inverters
• Free wheeling circuits
• Polarity protection applications

Single Diodes Procurement Notes

This component is officially marked as obsolete and discontinued by Diodes Incorporated. Verification of availability must rely on secondary market sources or existing stock holders rather than direct manufacturer distribution. Designers should confirm end-of-life status and plan for alternative sourcing strategies immediately. No new production units are expected from the original manufacturer.

Single Diodes Selection Notes

Selection requires consideration of the 40V reverse voltage rating and 10A continuous current capacity within the TO-220AC package. Thermal management is critical given the 2.5°C/W junction-to-case resistance. Verify that the application operates within the -65°C to +150°C junction temperature range. Due to obsolescence, substitute components with identical electrical characteristics and pinout compatibility must be evaluated for long-term supply stability.

Single Diodes Part Context

The MBR1040 belongs to the MBR10xx family of 10A Schottky rectifiers, differentiated primarily by their peak repetitive reverse voltage ratings. This specific variant sits between the 35V and 45V rated devices in the series. The family shares common mechanical dimensions, thermal properties, and general performance traits such as low forward voltage drop and high surge capability, standardized under the TO-220AC package format.

Single Diodes Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided datasheet. Engineers must identify cross-compatible Schottky rectifiers with 10A current rating, 40V reverse voltage, and TO-220AC packaging from other manufacturers. Ensure equivalent thermal resistance and forward voltage characteristics to maintain circuit performance.

Single Diodes FAQ

What is the typical total capacitance of the MBR1040?

The typical total capacitance is 400 pF, measured at 1.0MHz and an applied reverse voltage of 4.0V DC.

How does the forward voltage drop change with temperature?

The forward voltage drop decreases as temperature increases; it is 0.84V at +25°C and drops to 0.70V at +125°C when conducting 10A.