MBR6045PT-F Equivalent & Substitute Parts

Part Overview

The MBR6045PT-F is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common cathode with a maximum reverse voltage of 45 V and average rectified current of 60 A per diode. The device 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.

This part is discontinued at DiGi Electronics. Equivalent substitute parts are available from STMicroelectronics with active product status, offering alternative current ratings and package configurations while maintaining core electrical specifications.

Substiute Parts

MBR6045PT-F

Diodes IncorporatedIn Stock: 904MBR6045PT-F 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 MBR6045PT-F is determined by the following core electrical and mechanical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 45 V
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Variable Parameters (Allowable Differences):

• Current - Average Rectified (Io) (per Diode): Substitute parts may have lower current ratings
• Voltage - Forward (Vf) (Max) @ If: Variation acceptable within Schottky diode specifications
• Operating Temperature - Junction: Extended range acceptable
• Package / Case: Alternative through-hole packages acceptable (TO-247-3 vs. TO-3P-3)
• Current - Reverse Leakage @ Vr: Variation acceptable within Schottky specifications

The substitute parts listed maintain all mandatory parameters while offering different current ratings and package configurations suitable for applications where the full 60 A capability is not required.

Parameter Comparison

Engineering Selection Recommendations

STPS4045CWY Selection Criteria:

• Active product status with continuous availability
• AEC-Q101 automotive qualification
• Suitable for applications requiring 20 A or less per diode
• Extended operating temperature range (-40°C ~ 175°C)
• Lower reverse leakage current (200 µA @ 45 V)
• TO-247-3 package requires PCB layout modification from original TO-3P-3 design

STPS6045CW Selection Criteria:

• Active product status with continuous availability
• Suitable for applications requiring 30 A or less per diode
• Maximum operating temperature of 175°C
• Moderate reverse leakage current (500 µA @ 45 V)
• Lower forward voltage (630 mV @ 30 A) compared to MBR6045PT-F
• TO-247-3 package requires PCB layout modification from original TO-3P-3 design

Both substitute parts maintain ROHS3 compliance and fast recovery Schottky characteristics. Selection between STPS4045CWY and STPS6045CW depends on application current requirements and whether automotive qualification is necessary.

Frequently Asked Questions (FAQ)

Q: Can STPS4045CWY or STPS6045CW be used as direct replacements for MBR6045PT-F?

A: Both parts share identical reverse voltage (45 V), diode configuration (1 pair common cathode), technology (Schottky), and fast recovery characteristics. However, they have lower current ratings (20 A and 30 A respectively versus 60 A) and different package configurations (TO-247-3 versus TO-3P-3). Direct substitution is possible only if application current requirements do not exceed the substitute part's rating and PCB layout accommodates the different package.

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

A: The primary difference is average rectified current per diode: STPS4045CWY is rated for 20 A while STPS6045CW is rated for 30 A. STPS4045CWY includes AEC-Q101 automotive qualification. Forward voltage characteristics also differ: STPS6045CW exhibits lower forward voltage (630 mV @ 30 A) compared to STPS4045CWY (760 mV @ 20 A).

Q: Are there package compatibility concerns when substituting these parts?

A: Yes. The MBR6045PT-F uses TO-3P-3 (SC-65-3) package while both substitute parts use TO-247-3 package. These packages have different pin configurations, spacing, and thermal characteristics. PCB layout and mounting hardware modifications are required for substitution.

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

A: The MBR6045PT-F has reverse leakage of 1 mA @ 45 V, while STPS4045CWY has 200 µA and STPS6045CW has 500 µA. Lower reverse leakage in the substitute parts indicates improved leakage characteristics, which is beneficial for most applications.

Q: Why is STPS4045CWY qualified to AEC-Q101 while STPS6045CW is not listed with this qualification?

A: AEC-Q101 is an automotive qualification standard. STPS4045CWY carries this qualification, making it suitable for automotive applications. STPS6045CW does not list this qualification in the provided specifications. Application requirements determine whether this qualification is necessary.

Q: Can the MBR6045PT-F be used in applications where only 20 A or 30 A is required?

A: Yes. The MBR6045PT-F is rated for 60 A, so it operates within specification at lower currents. However, since the part is discontinued, using active substitute parts (STPS4045CWY or STPS6045CW) is preferable for new designs or long-term supply assurance.