MBR1040CT-BP Equivalent & Substitute Parts

Part Overview

The MBR1040CT-BP is a Schottky diode array manufactured by Micro Commercial Co, configured as a 1 Pair Common Cathode arrangement with a maximum reverse voltage rating of 40 V and average rectified current of 10 A per diode. The device is packaged in a Through Hole TO-220-3 form factor and features fast recovery characteristics suitable for rectification applications.

This part carries a "Not For New Designs" product status, indicating that the manufacturer has discontinued active development and support for this component. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

MBR1040CT-BP

Micro Commercial CoIn Stock: 715MBR1040CT-BP Datasheet

Current PartRFQ

DSSK20-0045AM

IXYSIn Stock: 1939DSSK20-0045AM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR1040CT-BP is determined by the following critical parameters:

Configuration Match: The substitute part must maintain a 1 Pair Common Cathode diode array configuration to ensure functional equivalence in the circuit topology.

Technology Consistency: Schottky technology must be preserved to maintain the fast recovery characteristics and forward voltage drop profile of the original design.

Electrical Ratings: The substitute part must meet or exceed the voltage and current specifications of the main part. A minimum reverse voltage rating of 40 V and average rectified current of 10 A per diode are required. Reverse leakage current must remain within acceptable limits for the application.

Thermal Performance: Operating temperature range must support the application's thermal environment. The substitute part must function across the required junction temperature range.

Mechanical Compatibility: Through Hole mounting type and TO-220-3 package form factor are required for direct board-level compatibility.

The DSSK20-0045AM from IXYS meets these substitution criteria with a 45 V reverse voltage rating (exceeding the 40 V requirement), identical 10 A current rating, matching Schottky technology, fast recovery speed, and compatible TO-220-3 packaging.

Parameter Comparison

Engineering Selection Recommendations

The DSSK20-0045AM is a suitable substitute for the MBR1040CT-BP based on the following engineering criteria:

Product Status Alignment: The MBR1040CT-BP carries a "Not For New Designs" designation, indicating end-of-life status. The DSSK20-0045AM maintains an "Active" product status, ensuring ongoing manufacturer support, availability, and compliance with current industry standards.

Compliance and Certifications: Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory equivalence. The DSSK20-0045AM carries RoHS3 compliance and MSL Level 1 rating, providing enhanced environmental and moisture handling documentation.

Electrical Margin: The substitute part's 45 V reverse voltage rating provides a 5 V margin above the 40 V requirement of the main part, offering improved reliability in voltage transient conditions. The matching 10 A current rating and fast recovery speed ensure functional equivalence in rectification circuits.

Thermal Capability: The extended operating temperature range of the DSSK20-0045AM (-55°C to 175°C versus -55°C to 150°C) provides additional thermal margin for applications operating at elevated junction temperatures.

Package Consideration: The DSSK20-0045AM is available in a TO-220-3 Full Pack with Isolated Tab configuration. This variant provides electrical isolation of the tab from the common cathode, which may offer advantages in thermal management and circuit isolation depending on application requirements.

Frequently Asked Questions (FAQ)

Q: Can the DSSK20-0045AM directly replace the MBR1040CT-BP without circuit modification?

A: Yes. Both parts share identical diode configuration (1 Pair Common Cathode), technology (Schottky), current rating (10 A), and package form factor (TO-220-3). The substitute part's higher voltage rating (45 V versus 40 V) and extended temperature range provide additional design margin without requiring circuit changes.

Q: What is the significance of the "Isolated Tab" feature on the DSSK20-0045AM?

A: The Isolated Tab variant electrically separates the mounting tab from the common cathode connection. In the standard MBR1040CT-BP, the tab is typically connected to the common cathode. The isolated tab on the substitute part allows independent thermal management without affecting circuit potential, which may be beneficial in certain thermal or isolation-critical applications.

Q: How does the higher reverse leakage current of the DSSK20-0045AM (300 µA @ 45 V versus 100 µA @ 40 V) affect circuit performance?

A: The reverse leakage current is specified at different voltage points (45 V for the substitute versus 40 V for the main part). At the main part's 40 V operating point, the DSSK20-0045AM's leakage would be lower than the specified 300 µA value. For applications sensitive to leakage current, circuit-level testing under actual operating conditions is appropriate to confirm performance margins.

Q: Are there any package compatibility considerations when substituting the DSSK20-0045AM?

A: Both parts use the TO-220-3 Through Hole package and are mechanically compatible with existing PCB layouts. The isolated tab variant of the DSSK20-0045AM requires verification that the tab isolation does not conflict with existing circuit grounding or thermal management schemes. Pin-to-pin compatibility is maintained.

Q: Why is the MBR1040CT-BP marked "Not For New Designs"?

A: This designation indicates that the manufacturer has discontinued active development and support for this component line. Existing designs may continue to use available inventory, but new designs should transition to active product alternatives such as the DSSK20-0045AM to ensure long-term supply chain stability and access to manufacturer technical support.

Q: What compliance advantages does the DSSK20-0045AM offer over the MBR1040CT-BP?

A: The DSSK20-0045AM carries explicit RoHS3 compliance certification and MSL Level 1 moisture sensitivity rating, providing documented environmental and handling specifications. Both parts maintain REACH Unaffected and EAR99 classifications. The substitute part's active product status ensures ongoing compliance with evolving regulatory requirements.