MBRB3030CTG Equivalent & Substitute Parts

Part Overview

The MBRB3030CTG is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with a maximum reverse voltage of 30 V and average rectified current of 15 A per diode. The component is packaged in TO-263-3 (D2PAK) surface mount configuration and is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

MBRB3030CTG

onsemiIn Stock: 1439MBRB3030CTG Datasheet

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SRS1630 MNG

Taiwan Semiconductor CorporationIn Stock: 838SRS1630 MNG Datasheet

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STPS3030CG-TR

STMicroelectronicsIn Stock: 1660STPS3030CG-TR Datasheet

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STPS30L30CG-TR

STMicroelectronicsIn Stock: 4247STPS30L30CG-TR Datasheet

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VS-25CTQ035S-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 834VS-25CTQ035S-M3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRB3030CTG is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V minimum
• Current - Average Rectified (Io) (per Diode): 15 A minimum
• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Substitute values must not exceed the original specification
• Current - Reverse Leakage @ Vr: Substitute values may vary within acceptable limits
• Operating Temperature - Junction: Substitute maximum temperature must meet or exceed original specification
• Product Status: Active status preferred for long-term availability

Substitute parts must maintain identical diode configuration, Schottky technology, and D2PAK package format. Reverse voltage and current ratings must meet or exceed the original part specifications. Forward voltage characteristics and reverse leakage current are secondary parameters that may vary between manufacturers while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute Recommendation: STPS30L30CG-TR (STMicroelectronics)

The STPS30L30CG-TR is the preferred substitute for the MBRB3030CTG. This part maintains identical electrical specifications (30 V reverse voltage, 15 A average rectified current) and package format (TO-263-3, D2PAK). The STPS30L30CG-TR offers superior forward voltage characteristics (460 mV @ 15 A versus 540 mV @ 15 A), resulting in lower power dissipation. The part carries active product status with ROHS3 compliance and unlimited moisture sensitivity level. Inventory availability is substantial at 4,200 pieces.

Secondary Substitute Recommendation: STPS3030CG-TR (STMicroelectronics)

The STPS3030CG-TR provides direct electrical equivalence with the original part (30 V, 15 A, 490 mV @ 15 A forward voltage). This part is available in Tape & Reel packaging and maintains active product status with full ROHS3 compliance. Inventory availability is 1,594 pieces.

Tertiary Substitute Recommendation: SRS1630 MNG (Taiwan Semiconductor Corporation)

The SRS1630 MNG offers enhanced current rating (16 A versus 15 A) while maintaining 30 V reverse voltage specification and identical D2PAK package format. This part is active status with ROHS3 compliance. Operating temperature range is -55°C to 125°C, which is lower than the original part's -55°C to 175°C specification. Inventory availability is 794 pieces.

Alternative Substitute: VS-25CTQ035S-M3 (Vishay General Semiconductor)

The VS-25CTQ035S-M3 provides higher reverse voltage rating (35 V versus 30 V) with identical 15 A current rating and D2PAK package. This part is active status with ROHS3 compliance and operating temperature range of -55°C to 150°C. The higher voltage rating provides additional design margin for applications with voltage transients. Inventory availability is 763 pieces.

Frequently Asked Questions (FAQ)

Q: Can the STPS30L30CG-TR directly replace the MBRB3030CTG without circuit modifications?

A: Yes. The STPS30L30CG-TR maintains identical reverse voltage (30 V), average rectified current (15 A), diode configuration (1 pair common cathode), and package format (TO-263-3, D2PAK). The lower forward voltage (460 mV @ 15 A versus 540 mV @ 15 A) results in reduced power dissipation, which is beneficial for thermal performance.

Q: What is the significance of the D2PAK package designation?

A: D2PAK is the surface mount equivalent of TO-263-3 package format. All substitute parts listed use identical D2PAK packaging with 2 leads plus tab configuration, ensuring mechanical and electrical compatibility with existing PCB layouts and solder reflow processes.

Q: Why does the VS-25CTQ035S-M3 have a higher reverse voltage rating (35 V)?

A: The VS-25CTQ035S-M3 is rated for 35 V maximum reverse voltage compared to the original 30 V specification. This higher rating does not prevent substitution; it provides additional voltage margin for applications subject to transient overvoltages. The part remains functionally equivalent at the 30 V operating point.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (STPS30L30CG-TR, STPS3030CG-TR, SRS1630 MNG, and VS-25CTQ035S-M3) carry ROHS3 compliance certification, matching the original MBRB3030CTG specification.

Q: What is the difference between Tape & Reel and Cut Tape packaging options?

A: Tape & Reel (TR) packaging is supplied on continuous tape wound on reels for automated assembly processes. Cut Tape (CT) & Digi-Reel® packaging is supplied on tape segments cut to specific lengths. Both formats contain identical components; packaging format selection depends on assembly equipment and volume requirements.

Q: Does the lower maximum junction temperature of the SRS1630 MNG (-55°C to 125°C) affect substitution suitability?

A: The SRS1630 MNG maximum junction temperature of 125°C is lower than the original part's 175°C specification. Substitution suitability depends on the application's actual operating temperature requirements. If the design operates below 125°C junction temperature, the SRS1630 MNG is suitable. Applications requiring operation above 125°C junction temperature require alternative substitutes.

Q: Why is the MBRB3030CTG classified as obsolete?

A: Obsolete classification indicates the manufacturer (onsemi) has discontinued production and support for this part. Active substitute parts from other manufacturers ensure continued availability and supply chain reliability for new designs and production requirements.

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

A: Yes. All substitute parts maintain the same diode configuration, Schottky technology, 30 V reverse voltage rating, 15 A current rating, and D2PAK package format. Electrical performance variations (forward voltage, reverse leakage current) are within acceptable limits for functional equivalence. Component selection may be based on availability, cost, or specific performance characteristics required by the application.