MBRB7H35-E3/45 Equivalent & Substitute Parts

Part Overview

The MBRB7H35-E3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 35 V DC reverse voltage and 7.5 A average rectified current in a Surface Mount TO-263AB (D2PAK) package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain functional compatibility while meeting the same electrical performance and mechanical mounting specifications.

Substiute Parts

MBRB7H35-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 946MBRB7H35-E3/45 Datasheet

Current PartRFQ

V8P45-M3/87A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1159V8P45-M3/87A Datasheet

MFR RecommendedRFQ

STPS745G-TR

STMicroelectronicsIn Stock: 16137STPS745G-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBRB7H35-E3/45 are identified based on the following substitution criteria:

Primary Substitution Parameters:

• Technology: Schottky rectifier diode
• Voltage Rating: DC reverse voltage equal to or greater than 35 V
• Current Rating: Average rectified current equal to or greater than 7.5 A
• Mounting Type: Surface Mount
• Package Compatibility: TO-263AB (D2PAK) or equivalent mechanical footprint
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Compliance: RoHS3 Compliant, MSL 1

Substitution Logic: Parts are grouped into two categories based on how closely they match the main part specifications:

1. Direct Equivalent (Same Package, Same Current Rating): Parts maintaining the TO-263AB package with 7.5 A current rating and voltage rating ≥ 35 V
2. Functional Equivalent (Different Package, Reduced Current Rating): Parts with different package types but meeting minimum voltage and current requirements for the application

Parameter Comparison

Engineering Selection Recommendations

STPS745G-TR (STMicroelectronics): This part is the primary direct equivalent substitute for the MBRB7H35-E3/45. It maintains identical package geometry (TO-263AB D2PAK) and current rating (7.5 A), with a higher voltage rating (45 V vs. 35 V). The part is in active production status with high inventory availability (16,100 pcs). It carries ROHS3 compliance and MSL 1 rating. The higher voltage rating provides design margin for applications operating at or near 35 V. This substitute is suitable for direct replacement in existing PCB layouts without modification.

V8P45-M3/87A (Vishay General Semiconductor - Diodes Division): This part is a functional equivalent with active product status and higher voltage rating (45 V). However, it features a different package type (TO-277A, 3-PowerDFN) and reduced current rating (4.3 A vs. 7.5 A). This substitute is applicable only to applications where the 4.3 A current rating is sufficient and PCB layout can accommodate the TO-277A package footprint. The part carries ROHS3 compliance and MSL 1 rating. Selection of this substitute requires PCB redesign and thermal analysis to confirm adequate current handling capacity.

Both substitutes maintain Schottky technology, fast recovery speed classification, and compliance certifications. Selection between substitutes depends on application current requirements and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can STPS745G-TR directly replace MBRB7H35-E3/45 without PCB modification?

A: Yes. STPS745G-TR maintains identical TO-263AB package geometry and 7.5 A current rating. No PCB layout changes are required. The higher 45 V rating is compatible with 35 V applications.

Q: What is the primary difference between STPS745G-TR and V8P45-M3/87A?

A: STPS745G-TR maintains the TO-263AB package with 7.5 A rating, while V8P45-M3/87A uses a different TO-277A package with reduced 4.3 A rating. Package selection depends on PCB layout and application current requirements.

Q: Is V8P45-M3/87A suitable for applications requiring 7.5 A continuous current?

A: No. V8P45-M3/87A is rated for 4.3 A average rectified current, which is below the 7.5 A requirement of the original part. This substitute is applicable only to applications with lower current demands.

Q: Do all substitute parts meet automotive qualification requirements?

A: The original MBRB7H35-E3/45 carries AEC-Q101 automotive qualification. STPS745G-TR and V8P45-M3/87A do not list AEC-Q101 qualification in the provided specifications. Automotive applications requiring AEC-Q101 certification must verify qualification status with manufacturers before selection.

Q: What is the impact of higher reverse voltage rating in STPS745G-TR?

A: The 45 V rating in STPS745G-TR exceeds the 35 V requirement of the original part, providing additional design margin and protection against voltage transients. This higher rating is compatible with 35 V applications without performance degradation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. STPS745G-TR and V8P45-M3/87A are both ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part specifications.

Q: What are the operating temperature differences between substitutes?

A: MBRB7H35-E3/45 operates from -65°C to 175°C. STPS745G-TR maximum junction temperature is 175°C (upper limit only). V8P45-M3/87A operates from -40°C to 150°C. Applications requiring -65°C minimum temperature operation must verify substitute compatibility.

Q: Can package footprints be interchanged between TO-263AB and TO-277A?

A: No. TO-263AB (D2PAK) and TO-277A (3-PowerDFN) have different mechanical footprints and pin configurations. PCB redesign is required to accommodate TO-277A package if V8P45-M3/87A is selected.