MBR3050PT Equivalent & Substitute Parts

Part Overview

The MBR3050PT is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 50 V DC reverse voltage and 20 A average rectified current per diode. Manufactured by onsemi, this component features fast recovery characteristics (≤500 ns) and is housed in a TO-247-3 package for through-hole mounting applications.

The MBR3050PT is classified as obsolete. Equivalent and substitute parts are available from active manufacturers to support ongoing production requirements and system designs requiring Schottky diode array functionality within compatible electrical and mechanical parameters.

Substiute Parts

MBR3050PT

onsemiIn Stock: 1471MBR3050PT Datasheet

Current PartRFQ

MBR3060PT

Taiwan Semiconductor CorporationIn Stock: 3405MBR3060PT Datasheet

SimilarRFQ

MBR3050PT

Fairchild SemiconductorIn Stock: 1506MBR3050PT Datasheet

DirectRFQ

MBR3050PT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1076MBR3050PT-E3/45 Datasheet

DirectRFQ

STPS4045CWY

STMicroelectronicsIn Stock: 3448STPS4045CWY Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR3050PT is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Diode configuration must remain 1 Pair Common Cathode
• Technology must be Schottky
• DC reverse voltage rating must be equal to or greater than 50 V
• Average rectified current per diode must be equal to or greater than 20 A
• Fast recovery speed characteristic (≤500 ns, >200 mA) must be maintained
• Operating temperature range must encompass the application requirements

Mechanical Compatibility Requirements:

• Mounting type must be Through Hole
• Package must be TO-247-3 or equivalent mechanical footprint (TO-247AD, TO-3P-3, SC-65-3)

Regulatory and Environmental Requirements:

• Moisture Sensitivity Level must be 1 (Unlimited)
• REACH and ECCN compliance status must be documented

Substitute parts are grouped into two categories: direct equivalents (identical electrical specifications with different manufacturers) and functional substitutes (enhanced electrical ratings within the same package family).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical Specifications):

The MBR3050PT manufactured by Fairchild Semiconductor provides identical electrical and mechanical specifications to the onsemi MBR3050PT. This part is currently in active production status and is RoHS3 compliant. The Fairchild variant is the primary direct replacement for obsolete onsemi inventory.

Functional Substitutes with Enhanced Current Rating:

The MBR3050PT-E3/45 from Vishay General Semiconductor - Diodes Division maintains the 50 V reverse voltage rating while providing an enhanced 30 A average rectified current per diode (versus 20 A). This part is actively produced and RoHS3 compliant. The enhanced current rating provides design margin for applications requiring higher current capacity within the same voltage class. Reverse leakage current is reduced to 1 mA @ 50 V.

The MBR3060PT from Taiwan Semiconductor Corporation provides a 60 V reverse voltage rating with 30 A average rectified current per diode. This part is actively produced and RoHS3 compliant. The elevated voltage rating accommodates applications with higher transient voltage requirements while maintaining the same package footprint and current capacity enhancement.

Functional Substitute with Lower Voltage Rating:

The STPS4045CWY from STMicroelectronics operates at 45 V reverse voltage with 20 A average rectified current per diode. This part is actively produced, RoHS3 compliant, and carries AEC-Q101 automotive qualification. The lower voltage rating is suitable for applications with reduced voltage stress requirements. Operating temperature range extends to 175°C maximum junction temperature.

Product Status Consideration:

All substitute parts listed are in active production status, ensuring long-term availability and supply chain continuity. The onsemi MBR3050PT obsolete status necessitates transition to one of the active alternatives for new designs and ongoing production support.

Frequently Asked Questions (FAQ)

Q: Can the MBR3050PT-E3/45 directly replace the MBR3050PT in all applications?

A: The MBR3050PT-E3/45 maintains the 50 V reverse voltage rating and provides enhanced 30 A current capacity versus the original 20 A specification. The TO-247-3 package footprint is mechanically compatible. Applications operating at or below 20 A will function identically. Applications requiring higher current capacity benefit from the enhanced rating. Forward voltage characteristics are comparable (760 mV @ 30 A versus 750 mV @ 20 A).

Q: What is the difference between the MBR3060PT and MBR3050PT-E3/45?

A: The MBR3060PT provides 60 V reverse voltage rating with 30 A current capacity. The MBR3050PT-E3/45 provides 50 V reverse voltage rating with 30 A current capacity. Both share identical package footprints and fast recovery characteristics. Selection depends on the application's voltage stress requirements. The MBR3060PT is suitable for systems with higher transient voltages; the MBR3050PT-E3/45 is suitable for systems with 50 V maximum voltage stress.

Q: Is the STPS4045CWY suitable for 50 V applications?

A: The STPS4045CWY is rated for 45 V maximum reverse voltage. Applications requiring 50 V operation must use parts rated for 50 V or higher. The STPS4045CWY is suitable for applications with maximum voltage stress of 45 V or less.

Q: Are all substitute parts RoHS3 compliant?

A: The MBR3050PT (Fairchild), MBR3050PT-E3/45 (Vishay), MBR3060PT (Taiwan Semiconductor), and STPS4045CWY (STMicroelectronics) are all RoHS3 compliant. The original onsemi MBR3050PT does not specify RoHS status.

Q: What is the significance of the TO-247-3 package designation?

A: The TO-247-3 package is a three-lead through-hole package suitable for high-current applications. All listed substitute parts utilize this package or mechanically equivalent variants (TO-247AD, TO-3P-3, SC-65-3), ensuring PCB footprint compatibility and mounting compatibility with existing designs.

Q: How does reverse leakage current affect part selection?

A: Reverse leakage current is specified at the rated reverse voltage. The MBR3050PT and MBR3050PT (Fairchild) specify 5 mA @ 50 V. The MBR3050PT-E3/45 and MBR3060PT specify 1 mA at their respective rated voltages. The STPS4045CWY specifies 200 µA @ 45 V. Lower reverse leakage current reduces power dissipation in reverse bias conditions. Applications sensitive to leakage current should prioritize parts with lower specifications.

Q: What is the Moisture Sensitivity Level (MSL) and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts carry MSL 1 rating, eliminating moisture-related reliability concerns for standard manufacturing and storage practices.

Q: Are there temperature range differences between substitute parts?

A: The MBR3050PT, MBR3050PT (Fairchild), and MBR3050PT-E3/45 operate from -65°C to 150°C junction temperature. The MBR3060PT operates from -55°C to 150°C. The STPS4045CWY operates from -40°C to 175°C. Applications requiring operation below -55°C must use the onsemi or Fairchild variants. Applications requiring operation above 150°C must use the STPS4045CWY.