VS-MBRB735PBF Equivalent & Substitute Parts

Part Overview

The VS-MBRB735PBF 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 part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs.

Substiute Parts

VS-MBRB735PBF

Vishay General Semiconductor - Diodes DivisionIn Stock: 767VS-MBRB735PBF Datasheet

Current PartRFQ

VS-MBRB735-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 7389VS-MBRB735-M3 Datasheet

DirectRFQ

STPS745G-TR

STMicroelectronicsIn Stock: 16137STPS745G-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VS-MBRB735PBF is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Technology: Schottky diode
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 35 V
• Current - Average Rectified (Io): Equal to or greater than 7.5 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: Equal to or less than 100 µA @ rated voltage

Mechanical Compatibility Requirements:

• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), or equivalent footprint
• Operating Temperature - Junction: Minimum -65°C to maximum 150°C or higher

Regulatory Compliance:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must satisfy all electrical parameters at or above the main part specifications and maintain mechanical and thermal compatibility within the same package family.

Parameter Comparison

Engineering Selection Recommendations

VS-MBRB735-M3 (Direct Substitute - Recommended)

The VS-MBRB735-M3 is the primary equivalent substitute for the VS-MBRB735PBF. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical ratings (35 V, 7.5 A) and mechanical specifications (TO-263AB D2PAK package). The VS-MBRB735-M3 is currently in active product status with 7,323 pieces in stock, ensuring supply continuity. Both parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges. The VS-MBRB735-M3 is supplied in Tube packaging, whereas the main part was supplied in standard packaging. This substitute provides direct functional equivalence with no design modifications required.

STPS745G-TR (Alternative Substitute - Cross-Platform Option)

The STPS745G-TR, manufactured by STMicroelectronics, serves as an alternative substitute when VS-MBRB735-M3 availability is constrained. This part meets all critical electrical parameters: 7.5 A average rectified current, fast recovery Schottky technology, and identical package footprint (TO-263AB D2PAK). The STPS745G-TR provides a higher voltage rating (45 V versus 35 V), which is compatible with applications designed for 35 V operation. The maximum operating junction temperature is 175°C, exceeding the main part specification of 150°C. The STPS745G-TR is currently in active product status with 16,100 pieces in stock and is supplied in Tape & Reel (TR) packaging. ROHS3 compliance and MSL 1 rating are maintained. This substitute is suitable for designs where higher voltage margin and extended thermal operating range are beneficial.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB735-M3 be used as a direct replacement for VS-MBRB735PBF?

A: Yes. Both parts are manufactured by Vishay General Semiconductor - Diodes Division with identical electrical specifications (35 V, 7.5 A), fast recovery Schottky technology, and TO-263AB D2PAK package footprint. No circuit modifications are required. The primary difference is packaging format (Tube versus standard).

Q: What is the difference between VS-MBRB735-M3 and STPS745G-TR?

A: VS-MBRB735-M3 matches the main part exactly in voltage rating (35 V) and is from the same manufacturer. STPS745G-TR is manufactured by STMicroelectronics with a higher voltage rating (45 V) and extended maximum junction temperature (175°C). Both share identical current rating (7.5 A), package type (TO-263AB D2PAK), and fast recovery Schottky technology. STPS745G-TR is suitable when higher voltage margin is required or when VS-MBRB735-M3 is unavailable.

Q: Are the substitute parts pin-compatible with the original VS-MBRB735PBF?

A: Yes. Both substitute parts use the TO-263AB D2PAK package with identical pinout: 2 leads plus tab. PCB footprints are directly compatible without modification.

Q: Do the substitute parts meet the same regulatory requirements?

A: Yes. Both VS-MBRB735-M3 and STPS745G-TR are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part specifications.

Q: What is the forward voltage difference between VS-MBRB735-M3 and the main part?

A: VS-MBRB735-M3 exhibits lower forward voltage (570 mV @ 7.5 A) compared to VS-MBRB735PBF (840 mV @ 15 A). This represents improved efficiency characteristics. The measurement conditions differ (7.5 A versus 15 A), reflecting typical operating points for each part.

Q: Can STPS745G-TR be used in applications rated for 35 V operation?

A: Yes. STPS745G-TR is rated for 45 V maximum reverse voltage, which exceeds the 35 V requirement. Applications designed for 35 V operation operate within the safe voltage margin of this part.

Q: What is the availability status of substitute parts?

A: VS-MBRB735-M3 has 7,323 pieces in stock (Active product status). STPS745G-TR has 16,100 pieces in stock (Active product status). Both parts are currently available for procurement.