MBRD330 Equivalent & Substitute Parts

Part Overview

The MBRD330 is a Schottky rectifier diode rated for 30 V DC reverse voltage and 3 A average rectified current in a surface mount DPAK package. The original onsemi MBRD330 carries an Obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical performance across voltage, current, and thermal specifications while accommodating modern compliance requirements.

Substiute Parts

MBRD330

onsemiIn Stock: 89240MBRD330 Datasheet

Current PartRFQ

MBRD330

SMC Diode SolutionsIn Stock: 89160MBRD330 Datasheet

DirectRFQ

RB051L-40TE25

Rohm SemiconductorIn Stock: 80454RB051L-40TE25 Datasheet

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VS-MBRD330TR-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 1086VS-MBRD330TR-M3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBRD330 are classified into two categories based on electrical and mechanical compatibility:

Direct Electrical Equivalents (Same Voltage and Current Rating): Substitute parts must maintain the 30 V DC reverse voltage rating and 3 A average rectified current specification. Forward voltage drop at 3 A must not exceed 600 mV. Reverse leakage current at 30 V must remain within 200 µA. Package must be DPAK (TO-252-3, SC-63) to ensure mechanical and thermal compatibility. These parts are suitable for direct replacement without circuit redesign.

Partial Equivalents (Reduced Voltage Rating): Parts with lower voltage ratings (such as 20 V) are listed for reference but require circuit evaluation. These parts maintain the 3 A current rating and fast recovery speed but operate at reduced reverse voltage margins. Substitution is permissible only in applications where the actual reverse voltage stress does not exceed the substitute part's rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MBRD330 (SMC Diode Solutions)

The SMC Diode Solutions MBRD330 is the recommended direct replacement for the obsolete onsemi MBRD330. Both parts share identical electrical specifications: 30 V reverse voltage, 3 A current rating, 600 mV forward voltage drop, and DPAK packaging. The SMC variant carries Active product status and ROHS3 compliance, addressing regulatory requirements for new production. Operating temperature range is -55°C to 150°C, which covers most industrial applications. Inventory availability is substantial at 89,145 pieces.

Secondary Substitute: VS-MBRD330TR-M3 (Vishay General Semiconductor)

The Vishay VS-MBRD330TR-M3 provides full electrical equivalence with identical 30 V, 3 A, and 600 mV specifications in DPAK packaging. This part is Active and ROHS3 compliant. Operating temperature range is -40°C to 150°C. Capacitance specification is provided (189 pF @ 5 V, 1 MHz), which may be relevant for high-frequency applications. Inventory is limited at 1,022 pieces. This part is suitable where Vishay qualification is required or where the narrower temperature range is acceptable.

Partial Equivalent: RB051L-40TE25 (Rohm Semiconductor)

The Rohm RB051L-40TE25 is rated for 20 V reverse voltage and 3 A current. Forward voltage drop is lower at 450 mV @ 3 A. Package is DO-214AC (SMA), not DPAK, requiring PCB layout modification. Product status is Not For New Designs. This part is suitable only for applications where reverse voltage stress does not exceed 20 V and where package change is acceptable. Substitution requires circuit validation.

Frequently Asked Questions (FAQ)

Q: Can the SMC Diode Solutions MBRD330 replace the obsolete onsemi MBRD330 without circuit modification?

A: Yes. Both parts are identical in electrical specification (30 V, 3 A, 600 mV forward voltage) and package (DPAK). No circuit redesign is required. The SMC part is Active and ROHS3 compliant, making it suitable for production use.

Q: What is the difference between the Vishay VS-MBRD330TR-M3 and the SMC MBRD330?

A: Electrical specifications are identical. The Vishay part provides capacitance data (189 pF @ 5 V, 1 MHz) and operates over a narrower temperature range (-40°C to 150°C versus -55°C to 150°C for SMC). Both are DPAK packaged and ROHS3 compliant. Selection depends on temperature requirements and Vishay qualification status.

Q: Can the Rohm RB051L-40TE25 be used as a substitute?

A: The Rohm part is not a direct substitute. It has a lower 20 V reverse voltage rating compared to the 30 V requirement of the MBRD330. It also uses a different package (DO-214AC/SMA instead of DPAK), requiring PCB layout changes. Substitution is permissible only in applications where reverse voltage stress is confirmed to remain below 20 V and where package change is feasible.

Q: What compliance certifications should I verify for new production?

A: Both the SMC MBRD330 and Vishay VS-MBRD330TR-M3 carry ROHS3 compliance. The original onsemi MBRD330 is RoHS non-compliant. For applications subject to RoHS regulations, use only the SMC or Vishay variants. Both parts are EAR99 classified and REACH unaffected or affected as noted in individual datasheets.

Q: Are there thermal considerations when selecting between substitutes?

A: The SMC MBRD330 operates from -55°C to 150°C, providing the widest temperature margin. The Vishay part operates from -40°C to 150°C. The Rohm RB051L-40TE25 specifies only a maximum junction temperature of 125°C. For applications requiring extended low-temperature operation below -40°C, the SMC part is preferred.

Q: What is the significance of the DPAK package specification?

A: DPAK (TO-252-3, SC-63) is a surface mount package with a thermal tab for heat dissipation. It is mechanically and thermally compatible with the original MBRD330. The Rohm RB051L-40TE25 uses DO-214AC (SMA), a smaller package without a thermal tab. Substitution requires PCB redesign and thermal re-evaluation.