MBR6040PT Equivalent & Substitute Parts

Part Overview

The MBR6040PT is a Schottky diode array manufactured by Diodes Incorporated, configured as a 1 Pair Common Cathode device rated for 40 V DC reverse voltage and 60 A average rectified current per diode. The component is packaged in TO-3P-3 (SC-65-3) through-hole configuration and features fast recovery characteristics with a maximum forward voltage of 750 mV at 60 A.

The MBR6040PT is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this part is specified or where inventory depletion necessitates alternative sourcing.

Substiute Parts

MBR6040PT

Diodes IncorporatedIn Stock: 4474MBR6040PT Datasheet

Current PartRFQ

STPS4045CWY

STMicroelectronicsIn Stock: 3448STPS4045CWY Datasheet

MFR RecommendedRFQ

STPS6045CW

STMicroelectronicsIn Stock: 2214STPS6045CW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR6040PT is determined by the following critical parameters:

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

Technology Match: All substitute parts must utilize Schottky diode technology to preserve the fast recovery and low forward voltage characteristics essential to the original design.

Electrical Performance: Substitute parts must satisfy the following criteria:

• Voltage rating (Vr) equal to or greater than 40 V
• Current rating (Io) equal to or greater than 60 A per diode
• Fast recovery speed characteristic (≤ 500ns, > 200mA)
• Operating temperature range compatible with or exceeding -55°C ~ 150°C

Mounting and Packaging: Substitute parts must be through-hole mounted devices. Package form factor differences are acceptable provided the electrical and mechanical interfaces are compatible with the original circuit design.

Compliance: All substitute parts must maintain ROHS3 compliance and MSL 1 rating to ensure environmental and handling compatibility.

The substitute parts listed below meet these criteria with variations in package form factor (TO-247-3 versus TO-3P-3) and current rating specifications.

Parameter Comparison

Engineering Selection Recommendations

STPS4045CWY Selection Criteria:

The STPS4045CWY is an active product manufactured by STMicroelectronics with AEC-Q101 automotive qualification. This part maintains Schottky technology and 1 Pair Common Cathode configuration. The voltage rating of 45 V exceeds the MBR6040PT requirement of 40 V. However, the current rating of 20 A per diode is substantially lower than the MBR6040PT specification of 60 A. This substitute is suitable only for applications where the circuit current demand does not exceed 20 A per diode. The TO-247-3 package differs from the original TO-3P-3 form factor and requires mechanical redesign of the mounting interface.

STPS6045CW Selection Criteria:

The STPS6045CW is an active product manufactured by STMicroelectronics. This part maintains Schottky technology and 1 Pair Common Cathode configuration with a voltage rating of 45 V. The current rating of 30 A per diode is lower than the MBR6040PT specification of 60 A but higher than the STPS4045CWY. This substitute is suitable for applications where the circuit current demand does not exceed 30 A per diode. The TO-247-3 package differs from the original TO-3P-3 form factor and requires mechanical redesign of the mounting interface. The forward voltage of 630 mV at 30 A is lower than the MBR6040PT, indicating improved efficiency at the rated current of this substitute.

General Considerations:

Both substitute parts are active products with current manufacturing support, addressing the obsolescence status of the MBR6040PT. Both maintain ROHS3 compliance and MSL 1 rating. The primary limitation of both substitutes is reduced current capacity relative to the original part. Selection between these substitutes depends on the actual current requirements of the application circuit. Applications requiring the full 60 A capacity of the MBR6040PT cannot be directly substituted with either listed part without circuit redesign or parallel device configuration.

Frequently Asked Questions (FAQ)

Q: Can the STPS4045CWY or STPS6045CW be used as direct replacements for the MBR6040PT?

A: Direct replacement is not possible without circuit redesign. Both substitute parts have lower current ratings (20 A and 30 A respectively) compared to the MBR6040PT (60 A). Additionally, the package form factor differs (TO-247-3 versus TO-3P-3), requiring mechanical redesign of the mounting interface. Substitution is only viable if the application circuit operates at or below the current rating of the selected substitute part.

Q: What is the primary difference between the STPS4045CWY and STPS6045CW?

A: The primary difference is current capacity. The STPS4045CWY is rated for 20 A per diode, while the STPS6045CW is rated for 30 A per diode. Both maintain identical voltage ratings (45 V), Schottky technology, and fast recovery characteristics. The STPS6045CW also exhibits lower forward voltage (630 mV at 30 A) compared to the STPS4045CWY (760 mV at 20 A).

Q: Are the substitute parts automotive qualified?

A: The STPS4045CWY carries AEC-Q101 automotive qualification. The STPS6045CW does not list automotive qualification in the provided specifications. Selection should consider application requirements for automotive-grade components.

Q: How does the package change from TO-3P-3 to TO-247-3 affect circuit design?

A: The TO-247-3 package has a different physical form factor and pin configuration compared to the TO-3P-3 package. Circuit board layout, mounting hardware, and thermal management design must be modified to accommodate the TO-247-3 package. Mechanical compatibility with existing circuit board designs cannot be assumed.

Q: What is the temperature operating range difference between the MBR6040PT and the substitutes?

A: The MBR6040PT operates from -55°C to 150°C. The STPS4045CWY operates from -40°C to 175°C, providing a higher maximum temperature but a higher minimum temperature. The STPS6045CW specifies a maximum junction temperature of 175°C without a minimum temperature specification in the provided data. Applications requiring operation below -40°C cannot use the STPS4045CWY or STPS6045CW.

Q: Do the substitute parts maintain the same reverse leakage characteristics?

A: No. The MBR6040PT specifies 1 mA reverse leakage at 40 V. The STPS4045CWY specifies 200 µA at 45 V, and the STPS6045CW specifies 500 µA at 45 V. Both substitutes exhibit lower reverse leakage current, which may be beneficial for certain applications but represents a change in device characteristics that should be evaluated in the circuit context.

Q: Are both substitute parts in active production?

A: Yes. Both the STPS4045CWY and STPS6045CW are classified as active products with current manufacturing support, addressing the obsolete status of the MBR6040PT. Inventory availability is confirmed for both parts.