MBR6045PT Equivalent & Substitute Parts

Part Overview

The MBR6045PT is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with 45 V DC reverse voltage rating and 30 A average rectified current per diode. The device is packaged in TO-218-3 (SOT-93) through-hole configuration and operates across a junction temperature range of -65°C to 175°C. The MBR6045PT is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production and field replacement applications.

Substiute Parts

MBR6045PT

onsemiIn Stock: 6307MBR6045PT Datasheet

Current PartRFQ

DSB60C45HB

IXYSIn Stock: 772DSB60C45HB Datasheet

Parametric EquivalentRFQ

VS-MBR6045WT-N3

Vishay General Semiconductor - Diodes DivisionIn Stock: 12658VS-MBR6045WT-N3 Datasheet

Parametric EquivalentRFQ

VX60M45C-M3/P

Vishay General Semiconductor - Diodes DivisionIn Stock: 1072VX60M45C-M3/P Datasheet

Parametric EquivalentRFQ

VX60M45CHM3/P

Vishay General Semiconductor - Diodes DivisionIn Stock: 1068VX60M45CHM3/P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR6045PT is determined by electrical and mechanical parameter equivalence. All substitute parts must satisfy the following criteria:

Electrical Parameters (Mandatory Match):

• Diode configuration: 1 pair common cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 45 V
• Current - Average Rectified (Io) (per Diode): 30 A
• Voltage - Forward (Vf) (Max) @ If: 620 mV @ 30 A
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Parameters (Mandatory Match):

• Mounting Type: Through Hole
• Configuration: 1 Pair Common Cathode

Acceptable Variations:

• Package / Case: Different through-hole packages (TO-218-3, TO-247-3, TO-220-3) are acceptable provided PCB footprint accommodation is verified
• Operating Temperature Range: Substitute parts may have narrower temperature ranges
• Current - Reverse Leakage @ Vr: Substitute parts may have higher leakage current values
• Product Status: Active status substitutes are preferred for obsolete parts
• RoHS Compliance: ROHS3 compliant substitutes are acceptable

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Electrical Equivalence):

The VS-MBR6045WT-N3 (Vishay) and DSB60C45HB (IXYS) are direct electrical equivalents with active product status. Both devices maintain the 45 V reverse voltage, 30 A current rating, and 620 mV forward voltage specification. The VS-MBR6045WT-N3 offers the closest match to the original MBR6045PT with identical reverse leakage current (1 mA @ 45 V) and is available in higher inventory quantity (12,590 pcs). The DSB60C45HB provides equivalent electrical performance with higher reverse leakage current (10 mA @ 45 V) and operates within a narrower temperature range (-55°C to 150°C).

Secondary Substitutes (Automotive Grade, Narrower Temperature Range):

The VX60M45C-M3/P and VX60M45CHM3/P (both Vishay) are automotive-qualified alternatives with AEC-Q101 certification. These devices are packaged in TO-220-3 configuration and feature lower reverse leakage current (350 µA @ 45 V). The operating temperature range is -40°C to 175°C, which accommodates the upper temperature limit of the original part but restricts low-temperature operation to -40°C. Both parts are ROHS3 compliant and carry active product status.

Package Considerations:

The MBR6045PT uses TO-218-3 (SOT-93) packaging. Substitutes employ TO-247-3 or TO-220-3 packages. PCB layout modifications are required to accommodate different package footprints. The TO-247-3 package (DSB60C45HB, VS-MBR6045WT-N3) provides similar thermal and electrical performance to TO-218-3. The TO-220-3 package (VX60M45C-M3/P, VX60M45CHM3/P) requires verification of mounting hole spacing and thermal interface compatibility.

Compliance Status:

All substitute parts are ROHS3 compliant, addressing environmental regulatory requirements. The original MBR6045PT is RoHS non-compliant. Selection of ROHS3 compliant substitutes aligns with current manufacturing standards and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the DSB60C45HB replace the MBR6045PT in all applications?

A: The DSB60C45HB is electrically equivalent in voltage, current, and forward voltage specifications. The primary differences are package type (TO-247-3 vs. TO-218-3), operating temperature range (-55°C to 150°C vs. -65°C to 175°C), and reverse leakage current (10 mA vs. 1 mA @ 45 V). PCB footprint accommodation must be verified. Applications requiring operation below -55°C or above 150°C require alternative selection.

Q: What is the difference between the Vishay TO-247-3 and TO-220-3 packages?

A: Both packages are through-hole configurations with different physical dimensions and mounting hole spacing. The TO-247-3 package (VS-MBR6045WT-N3) maintains closer dimensional similarity to the original TO-218-3 package. The TO-220-3 package (VX60M45C-M3/P, VX60M45CHM3/P) requires different PCB hole patterns and mounting hardware. Thermal performance and electrical characteristics are equivalent across both packages.

Q: Are the automotive-grade VX60M45C-M3/P and VX60M45CHM3/P suitable for non-automotive applications?

A: Yes. Automotive-grade components with AEC-Q101 qualification meet or exceed standard industrial specifications. These parts are suitable for non-automotive applications and provide enhanced reliability through automotive qualification standards. The narrower operating temperature range (-40°C to 175°C) must be verified against application requirements.

Q: What is the significance of reverse leakage current differences among substitutes?

A: Reverse leakage current affects power dissipation and circuit performance at maximum reverse voltage. The MBR6045PT and VS-MBR6045WT-N3 specify 1 mA @ 45 V. The DSB60C45HB specifies 10 mA @ 45 V, representing higher leakage. The VX60M45C-M3/P and VX60M45CHM3/P specify 350 µA @ 45 V, representing lower leakage. Applications sensitive to reverse leakage current should select parts with specifications matching or lower than the original design requirement.

Q: Is RoHS compliance a mandatory requirement for substitution?

A: RoHS compliance is determined by application and regulatory jurisdiction. All substitute parts listed are ROHS3 compliant, addressing current environmental regulations. The original MBR6045PT is RoHS non-compliant. New production designs should incorporate ROHS3 compliant substitutes. Existing designs using non-compliant parts may continue operation without modification unless regulatory requirements change.

Q: Can multiple substitute parts be used interchangeably within the same design?

A: Substitutes with different packages (TO-218-3, TO-247-3, TO-220-3) require separate PCB designs due to different mounting hole patterns and thermal interface requirements. Within a single PCB design, only substitutes with identical package types are directly interchangeable. Cross-package substitution requires PCB redesign and thermal analysis.