MBR3040CT-BP Equivalent & Substitute Parts

Part Overview

The MBR3040CT-BP is a Schottky diode array manufactured by Micro Commercial Co, configured as a 1 Pair Common Cathode arrangement in a TO-220-3 through-hole package. This component is rated for 40 V DC reverse voltage with 30 A average rectified current per diode and features fast recovery characteristics suitable for high-frequency rectification applications.

The MBR3040CT-BP carries a "Not For New Designs" product status, indicating that Micro Commercial Co has discontinued active development and support for this part number. This status necessitates identification of equivalent substitute components that maintain functional compatibility while offering active product support and improved availability.

Substiute Parts

MBR3040CT-BP

Micro Commercial CoIn Stock: 836MBR3040CT-BP Datasheet

Current PartRFQ

DSB30C45PB

IXYSIn Stock: 6362DSB30C45PB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR3040CT-BP is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Diode Configuration: Must be 1 Pair Common Cathode
• Technology: Must be Schottky
• Package / Case: Must be TO-220-3
• Mounting Type: Must be Through Hole
• Speed: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature Range: Must support -55°C to 150°C junction temperature

Functional Compatibility Parameters:

• Voltage - DC Reverse (Vr) (Max): Substitute must equal or exceed 40 V
• Current - Average Rectified (Io) (per Diode): Substitute must equal or exceed 30 A
• Voltage - Forward (Vf) (Max) @ If: Substitute performance at rated current

The DSB30C45PB from IXYS meets all critical substitution parameters. While the DSB30C45PB has a reduced current rating of 15 A per diode (compared to 30 A for the MBR3040CT-BP), it maintains the required voltage rating of 45 V, exceeding the 40 V requirement of the main part. The DSB30C45PB is suitable for applications where the 15 A per-diode current capacity is sufficient for the circuit design.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: DSB30C45PB

The DSB30C45PB is the designated substitute for the MBR3040CT-BP based on the following engineering criteria:

1. Product Status Alignment: The DSB30C45PB carries an "Active" product status, ensuring continued manufacturer support, availability, and compliance updates. This contrasts with the MBR3040CT-BP's "Not For New Designs" status.

2. Compliance and Certifications: The DSB30C45PB is ROHS3 Compliant and carries Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating superior handling and environmental compliance compared to the main part.

3. Electrical Compatibility: The DSB30C45PB maintains the required TO-220-3 package, 1 Pair Common Cathode configuration, Schottky technology, and fast recovery speed characteristics. The 45 V reverse voltage rating exceeds the 40 V requirement.

4. Current Rating Consideration: The DSB30C45PB is rated for 15 A average rectified current per diode, which is lower than the MBR3040CT-BP's 30 A rating. Selection of this substitute requires verification that the application circuit design operates within the 15 A per-diode current limit.

5. Inventory and Supply: The DSB30C45PB is available in high volume (6300 Pcs New Original In Stock) in Tube packaging, providing reliable supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the DSB30C45PB directly replace the MBR3040CT-BP in all applications?

A: The DSB30C45PB is mechanically and electrically compatible in terms of package type (TO-220-3), diode configuration (1 Pair Common Cathode), and technology (Schottky). However, the current rating difference (15 A vs. 30 A per diode) requires circuit-level evaluation. Applications operating at or near 30 A per diode cannot use the DSB30C45PB without circuit redesign.

Q: What is the significance of the "Not For New Designs" status on the MBR3040CT-BP?

A: This status indicates that Micro Commercial Co has ceased active development and support for this part number. Manufacturers typically apply this designation to obsolete or superseded components. New designs should utilize active product alternatives such as the DSB30C45PB to ensure long-term availability and compliance support.

Q: Are the TO-220-3 packages of both parts physically identical?

A: Both the MBR3040CT-BP and DSB30C45PB use the TO-220-3 through-hole package. The physical dimensions and pin configuration are identical, allowing direct mechanical substitution on printed circuit boards without layout modifications.

Q: How do the forward voltage characteristics compare?

A: The MBR3040CT-BP exhibits 840 mV forward voltage at 30 A, while the DSB30C45PB exhibits 590 mV forward voltage at 15 A. These measurements are taken at different current levels and cannot be directly compared. Forward voltage performance depends on the specific operating current of the application circuit.

Q: What is the difference in reverse leakage current between the two parts?

A: The MBR3040CT-BP has 200 µA reverse leakage at 40 V, while the DSB30C45PB has 10 mA reverse leakage at 45 V. The DSB30C45PB exhibits higher reverse leakage current. Applications sensitive to leakage current performance require detailed circuit analysis to determine acceptability.

Q: Does the DSB30C45PB meet RoHS compliance requirements?

A: Yes, the DSB30C45PB is ROHS3 Compliant. The MBR3040CT-BP compliance status is not specified in the provided data. For applications requiring RoHS certification, the DSB30C45PB provides documented compliance.

Q: What packaging format is available for the DSB30C45PB?

A: The DSB30C45PB is supplied in Tube packaging, whereas the MBR3040CT-BP is supplied in Bulk packaging. Tube packaging provides organized component presentation suitable for automated assembly processes and component handling.