MBRF40040R Schottky Diode Module - Equivalent & Substitute Parts

Part Overview

The MBRF40040R is a Schottky diode module manufactured by GeneSiC Semiconductor, configured as a 1 Pair Common Anode array with a maximum reverse voltage rating of 40 V and average rectified current of 200 A per diode. The device is packaged in TO-244AB chassis mount configuration and classified as obsolete product status.

Due to the obsolete status of the MBRF40040R, identification of equivalent substitute components is necessary to maintain design continuity and ensure supply chain availability for applications requiring Schottky rectifier modules with comparable electrical and mechanical characteristics.

Substiute Parts

MBRF40040R

GeneSiC SemiconductorIn Stock: 820MBRF40040R Datasheet

Current PartRFQ

MBR20045CTR

GeneSiC SemiconductorIn Stock: 838MBR20045CTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRF40040R is determined by the following critical parameters:

Primary Substitution Criteria:

• Diode configuration: 1 Pair Common Anode
• Technology: Schottky
• Current rating: 200 A average rectified per diode
• Reverse voltage rating: minimum 40 V (equal or higher acceptable)
• Fast recovery speed characteristic: ≤ 500ns, > 200mA (Io)
• Mounting type: Chassis Mount
• Operating temperature range: −55°C to 150°C minimum

The MBR20045CTR meets these substitution criteria with the following considerations: it maintains the same diode configuration, Schottky technology, and 200 A current rating. The reverse voltage rating is increased to 45 V, which is compatible with applications designed for 40 V operation. The package format changes from TO-244AB to Twin Tower, which represents a different mechanical form factor but maintains chassis mount capability.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MBRF40040R is classified as obsolete, making the MBR20045CTR the appropriate substitute from the same manufacturer. The MBR20045CTR maintains active product status with confirmed availability of 761 pieces in stock.

Compliance and Certification: The MBR20045CTR is RoHS Compliant, meeting current regulatory requirements for electronic components. Both parts share the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications, indicating equivalent export and tariff treatment.

Electrical Compatibility: The MBR20045CTR provides a 5 V higher reverse voltage rating (45 V vs. 40 V), which is acceptable for applications designed for the MBRF40040R. The identical 200 A current rating and fast recovery Schottky technology ensure functional equivalence in rectification applications.

Mechanical Consideration: The package change from TO-244AB to Twin Tower requires verification of PCB footprint compatibility and thermal management provisions. Both are chassis mount configurations suitable for high-current applications.

Frequently Asked Questions (FAQ)

Q: Can the MBR20045CTR directly replace the MBRF40040R in existing designs?

A: The MBR20045CTR is electrically compatible as a substitute for the MBRF40040R based on matching diode configuration, Schottky technology, and 200 A current rating. However, the package change from TO-244AB to Twin Tower requires PCB layout modification and verification of mechanical mounting compatibility.

Q: What is the significance of the higher 45 V reverse voltage rating on the MBR20045CTR?

A: The MBR20045CTR's 45 V rating exceeds the MBRF40040R's 40 V specification. This higher rating is acceptable for applications designed for 40 V operation, as the component can safely operate at or below its rated voltage. No circuit redesign is required.

Q: Are there differences in forward voltage characteristics between these parts?

A: The provided specifications list forward voltage at different current levels: MBRF40040R at 700 mV @ 200 A and MBR20045CTR at 650 mV @ 100 A. Direct comparison at identical current levels is not possible from the provided data. Thermal and efficiency impacts should be evaluated based on actual application current profiles.

Q: How do the reverse leakage currents compare?

A: The specifications provide reverse leakage measurements at different voltage conditions (1 mA @ 40 V for MBRF40040R and 5 mA @ 20 V for MBR20045CTR), making direct comparison not applicable. Leakage performance should be verified through detailed datasheets if critical to the application.

Q: What are the packaging implications of switching from TO-244AB to Twin Tower?

A: TO-244AB and Twin Tower are distinct mechanical packages. The Twin Tower format requires different PCB footprint design, mounting hole patterns, and thermal interface provisions. Physical dimensions, lead spacing, and mounting hardware must be verified against application requirements before implementation.

Q: Is the MBR20045CTR suitable for high-temperature applications?

A: Both parts are designed for −55°C to 150°C junction temperature operation. The MBR20045CTR, as an active product from the same manufacturer, is specified for equivalent thermal performance. Detailed thermal analysis should reference the complete datasheet for specific thermal resistance values.

Q: What is the inventory status for the MBR20045CTR?

A: The MBR20045CTR has 761 pieces of new original stock available, confirming supply availability for production requirements.