MBRB750HE3_A/I Equivalent & Substitute Parts

Part Overview

The MBRB750HE3_A/I is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V DC reverse voltage and 7.5 A average rectified current in a TO-263AB surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs. Substitute parts must maintain electrical performance within acceptable operating parameters while meeting automotive-grade qualification standards.

Substiute Parts

MBRB750HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 896MBRB750HE3_A/I Datasheet

Current PartRFQ

V8P6HM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 13828V8P6HM3_A/I Datasheet

MFR RecommendedRFQ

SRAS850 MNG

Taiwan Semiconductor CorporationIn Stock: 793SRAS850 MNG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRB750HE3_A/I is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage rating equal to or greater than 50 V DC reverse voltage
• Current rating equal to or greater than 7.5 A average rectified current
• Schottky diode technology with fast recovery characteristics (≤ 500ns, > 200mA)
• Surface mount package compatibility
• Automotive-grade qualification (AEC-Q101)
• RoHS3 compliance

Identified Substitute Parts:

1. V8P6HM3_A/I (Vishay General Semiconductor - Diodes Division): Rated 60 V / 8 A, TO-277A package, active product status
2. SRAS850 MNG (Taiwan Semiconductor Corporation): Rated 50 V / 8 A, TO-263AB package, active product status

Both substitutes meet or exceed the electrical performance requirements of the obsolete MBRB750HE3_A/I while maintaining automotive qualification and compliance standards.

Parameter Comparison

Engineering Selection Recommendations

V8P6HM3_A/I Selection: This substitute is recommended for applications where higher voltage margin is beneficial. The 60 V rating provides 20% additional voltage headroom compared to the original 50 V specification. The lower forward voltage (610 mV @ 8 A) reduces power dissipation. However, the TO-277A package differs from the original TO-263AB, requiring PCB layout modification. This part maintains full automotive qualification (AEC-Q101) and active product status ensures long-term availability. The operating temperature range (-40°C ~ 150°C) is narrower at the lower end compared to the original (-65°C ~ 150°C).

SRAS850 MNG Selection: This substitute maintains identical voltage rating (50 V) and package form factor (TO-263AB) as the original MBRB750HE3_A/I, enabling direct PCB compatibility without layout changes. The 8 A current rating exceeds the original 7.5 A specification. The forward voltage (700 mV @ 8 A) is comparable to the original. Reverse leakage current is significantly lower (100 µA @ 50 V versus 500 µA @ 50 V), indicating superior leakage performance. Active product status ensures procurement availability. Automotive qualification and AEC-Q101 certification are not explicitly specified for this part.

Selection Guidance: For applications requiring strict automotive qualification maintenance and maximum design continuity, V8P6HM3_A/I is the preferred substitute despite package differences. For applications prioritizing PCB layout compatibility and identical package form factor, SRAS850 MNG is suitable where automotive qualification is not mandatory.

Frequently Asked Questions (FAQ)

Q: Can the V8P6HM3_A/I be used as a direct replacement without PCB modifications?

A: No. The V8P6HM3_A/I uses a TO-277A (SMPC) package, while the original MBRB750HE3_A/I uses TO-263AB (D2PAK). These packages have different pinout configurations and physical dimensions, requiring PCB layout redesign.

Q: What is the significance of the lower forward voltage in the V8P6HM3_A/I?

A: The V8P6HM3_A/I exhibits 610 mV forward voltage at 8 A compared to 750 mV at 7.5 A for the original part. This represents improved efficiency and reduced power dissipation in the diode during forward conduction, resulting in lower thermal load on the circuit.

Q: Is the SRAS850 MNG suitable for automotive applications?

A: The SRAS850 MNG is not specified with automotive-grade qualification or AEC-Q101 certification in the provided data. Applications requiring automotive qualification should use the V8P6HM3_A/I, which maintains full AEC-Q101 compliance.

Q: Why does the SRAS850 MNG have significantly lower reverse leakage current?

A: The SRAS850 MNG exhibits 100 µA reverse leakage at 50 V compared to 500 µA for the original part. This difference reflects manufacturing process variations between manufacturers and may indicate superior junction quality, resulting in lower standby current consumption.

Q: Can both substitute parts handle the same current levels as the original?

A: Both substitutes exceed the original 7.5 A specification. The V8P6HM3_A/I is rated for 8 A, and the SRAS850 MNG is also rated for 8 A. Both are capable of handling the original design current with margin.

Q: What is the impact of the narrower operating temperature range in the V8P6HM3_A/I?

A: The V8P6HM3_A/I operates from -40°C to 150°C, compared to the original -65°C to 150°C. Applications requiring operation below -40°C junction temperature must use the original part or the SRAS850 MNG (-55°C to 150°C).

Q: Are both substitute parts available in the same packaging format (Tape & Reel)?

A: The V8P6HM3_A/I is specified as Tape & Reel (TR) packaging. The SRAS850 MNG packaging format is not specified in the provided data. Confirm packaging availability with the supplier for production requirements.