MBR4060PT Equivalent & Substitute Parts

Part Overview

The MBR4060PT is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 60 V DC reverse voltage and 40 A average rectified current per diode. Manufactured by Diodes Incorporated, this component features fast recovery characteristics with a maximum forward voltage of 800 mV at 20 A and is housed in a TO-3P-3 (SC-65-3) through-hole package.

The MBR4060PT is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, diode configuration, and thermal operating range while accommodating potential package variations.

Substiute Parts

MBR4060PT

Diodes IncorporatedIn Stock: 1402MBR4060PT Datasheet

Current PartRFQ

MBR4060PT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 2843MBR4060PT-E3/45 Datasheet

DirectRFQ

MBR4060WT

Vishay General Semiconductor - Diodes DivisionIn Stock: 22319MBR4060WT Datasheet

DirectRFQ

DSSK80-006B

IXYSIn Stock: 5480DSSK80-006B Datasheet

MFR RecommendedRFQ

MBR4060PT

Fairchild SemiconductorIn Stock: 1341MBR4060PT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR4060PT is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 60 V minimum
• Current - Average Rectified (Io) (per Diode): 40 A minimum
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -65°C to 150°C minimum range
• Mounting Type: Through Hole

Flexible Parameters (allowing substitution with different values):

• Voltage - Forward (Vf): May vary within acceptable circuit design margins
• Current - Reverse Leakage @ Vr: May vary within acceptable circuit design margins
• Package / Case: Alternative through-hole packages acceptable if mechanical fit permits
• RoHS Status: May differ based on application requirements

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching all mandatory parameters) and Functional Alternatives (meeting minimum electrical requirements with package or performance variations).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MBR4060PT (Fairchild Semiconductor)

The Fairchild Semiconductor MBR4060PT is the optimal substitute for the obsolete Diodes Incorporated MBR4060PT. This part maintains identical electrical specifications across all critical parameters: 60 V reverse voltage, 40 A average rectified current, 800 mV forward voltage at 20 A, and -65°C to 150°C operating temperature range. The component is housed in the same TO-3P-3 (SC-65-3) package, ensuring direct mechanical compatibility. Product status is Active, providing long-term availability and supply chain stability. ROHS3 compliance aligns with modern regulatory requirements.

Secondary Recommendation: DSSK80-006B (IXYS)

The DSSK80-006B serves as a functional alternative when package variation is acceptable. This part maintains the 60 V reverse voltage and 40 A current rating, matching the primary electrical requirements. The component is housed in a TO-247-3 package, which differs mechanically from the original TO-3P-3 but accommodates the same through-hole mounting methodology. Product status is Active with ROHS3 compliance. Forward voltage is reduced to 550 mV at 40 A, offering improved thermal efficiency. Reverse leakage current is elevated to 20 mA at 60 V, which may require circuit evaluation depending on application sensitivity. Operating temperature range is -55°C to 150°C, providing adequate coverage for most applications.

Not Recommended: MBR4060PT-E3/45 (Vishay) and MBR4060WT (Vishay)

The MBR4060PT-E3/45 and MBR4060WT both specify 20 A average rectified current per diode, which is insufficient for applications requiring the full 40 A capacity of the original MBR4060PT. These parts do not meet the mandatory current rating criterion and are unsuitable as direct substitutes.

Frequently Asked Questions (FAQ)

Q: Can the MBR4060PT-E3/45 be used as a substitute for the MBR4060PT?

A: No. The MBR4060PT-E3/45 is rated for 20 A average rectified current per diode, while the MBR4060PT requires 40 A. This represents a 50% reduction in current capacity and does not satisfy the mandatory electrical requirements for substitution.

Q: What is the difference between the TO-3P-3 and TO-247-3 packages?

A: Both are through-hole packages suitable for high-current applications. The TO-3P-3 (SC-65-3) and TO-247-3 differ in physical dimensions and pin configuration. Mechanical compatibility must be verified during board layout evaluation. The DSSK80-006B uses TO-247-3 packaging, which may require PCB modification if the original design was optimized for TO-3P-3 dimensions.

Q: Does the DSSK80-006B have lower forward voltage than the original MBR4060PT?

A: Yes. The DSSK80-006B specifies 550 mV forward voltage at 40 A, compared to 800 mV at 20 A for the MBR4060PT. Lower forward voltage reduces power dissipation and heat generation, which is advantageous in most applications. Circuit thermal analysis should confirm that reduced dissipation does not negatively impact design margins.

Q: Why is the MBR4060WT listed as obsolete?

A: The MBR4060WT is classified as obsolete by the manufacturer, indicating discontinued production and limited future availability. While inventory may be available from distributors, long-term procurement cannot be assured. Active alternatives such as the Fairchild MBR4060PT or IXYS DSSK80-006B are preferred for new designs and ongoing production.

Q: Is the MBR4060PT (Fairchild) identical to the MBR4060PT (Diodes Incorporated)?

A: Both parts share the same part number and electrical specifications: 60 V reverse voltage, 40 A average rectified current, 800 mV forward voltage at 20 A, and -65°C to 150°C operating temperature. Both use the TO-3P-3 (SC-65-3) package. The Fairchild version is Active and ROHS3 compliant, making it the preferred substitute for the obsolete Diodes Incorporated version.

Q: What is the significance of the 1 mA reverse leakage current specification?

A: Reverse leakage current indicates the small current that flows through the diode when reverse-biased. The 1 mA specification at 60 V is typical for Schottky diodes and represents acceptable leakage for most rectification applications. The DSSK80-006B specifies 20 mA at 60 V, which is elevated but remains within acceptable limits for many designs. Applications with strict leakage requirements should verify circuit performance with the higher leakage value.

Q: Can the MBR4060PT operate at temperatures below -55°C?

A: The original MBR4060PT (Diodes Incorporated) and the Fairchild MBR4060PT both specify -65°C minimum junction temperature, supporting operation in colder environments. The DSSK80-006B and MBR4060WT specify -55°C minimum, which is adequate for most industrial and commercial applications but may be insufficient for extreme cold-weather or aerospace applications requiring -65°C operation.