MBRB1035-E3/81 Equivalent & Substitute Parts

Part Overview

The MBRB1035-E3/81 is a Schottky rectifier diode rated for 35 V DC reverse voltage and 10 A average rectified current in a surface mount TO-263AB (D2PAK) package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status and limited availability through standard distribution channels, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MBRB1035-E3/81

Vishay General Semiconductor - Diodes DivisionIn Stock: 3192MBRB1035-E3/81 Datasheet

Current PartRFQ

MBRB1045-E3/81

Vishay General Semiconductor - Diodes DivisionIn Stock: 2216MBRB1045-E3/81 Datasheet

MFR RecommendedRFQ

STPS10H100CG-TR

STMicroelectronicsIn Stock: 4995STPS10H100CG-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRB1035-E3/81 is determined by the following critical parameters:

Primary Substitution Criteria:

• Technology: Schottky diode
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount
• Current - Average Rectified (Io): 10 A minimum
• Voltage - DC Reverse (Vr) (Max): 35 V minimum
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Substitute parts must meet or exceed the voltage and current ratings of the original part while maintaining identical or compatible package geometry and electrical performance characteristics. Parts with higher voltage ratings are acceptable as they provide backward compatibility within the same package footprint.

Parameter Comparison

Engineering Selection Recommendations

MBRB1045-E3/81 (Vishay General Semiconductor - Diodes Division)

This part is a direct form-fit-function substitute for the MBRB1035-E3/81. It maintains identical package geometry (TO-263AB), mounting type (surface mount), current rating (10 A), and forward voltage characteristics (840 mV @ 20 A). The MBRB1045-E3/81 features a higher voltage rating (45 V versus 35 V), providing enhanced voltage margin while remaining fully compatible with existing PCB layouts. Both parts are ROHS3 compliant with MSL 1 rating. The MBRB1045-E3/81 is classified as Last Time Buy, indicating limited future availability.

STPS10H100CG-TR (STMicroelectronics)

This part is a functional substitute with important design considerations. It shares the same package footprint (TO-263AB), mounting type (surface mount), and fast recovery speed characteristics. However, the STPS10H100CG-TR is configured as a diode array (1 Pair Common Cathode) with a per-diode current rating of 5 A, which is half the 10 A rating of the original part. The voltage rating is significantly higher (100 V). This part is classified as Active, ensuring long-term availability. The STPS10H100CG-TR is ROHS3 compliant with MSL 1 rating and features a maximum junction temperature of 175°C.

Frequently Asked Questions (FAQ)

Q: Can the MBRB1045-E3/81 be used as a direct replacement for the MBRB1035-E3/81?

A: Yes. The MBRB1045-E3/81 is a direct substitute. Both parts share identical package geometry (TO-263AB), current rating (10 A), forward voltage characteristics (840 mV @ 20 A), and operating temperature range (-65°C ~ 150°C). The higher voltage rating (45 V versus 35 V) provides additional design margin and does not compromise compatibility.

Q: What are the limitations of using the STPS10H100CG-TR as a substitute?

A: The STPS10H100CG-TR has a per-diode current rating of 5 A, which is half the 10 A rating of the MBRB1035-E3/81. Applications requiring the full 10 A current capacity cannot use this part. Additionally, the STPS10H100CG-TR is a diode array with common cathode configuration, requiring circuit design verification to confirm compatibility with the original single-diode topology.

Q: Are all substitute parts available in the same packaging format?

A: All three parts (MBRB1035-E3/81, MBRB1045-E3/81, and STPS10H100CG-TR) use the TO-263-3, D2PAK (2 Leads + Tab), TO-263AB package. PCB footprints are identical, allowing direct physical substitution without layout modifications.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both Vishay parts and the STMicroelectronics part meet identical environmental and regulatory requirements.

Q: Which substitute part offers the longest product lifecycle?

A: The STPS10H100CG-TR is classified as Active, indicating ongoing production and availability. The MBRB1045-E3/81 is classified as Last Time Buy, indicating limited future availability. The MBRB1035-E3/81 is obsolete.

Q: What is the difference in reverse leakage current between the parts?

A: The MBRB1035-E3/81 and MBRB1045-E3/81 both specify 100 µA reverse leakage at their respective voltage ratings. The STPS10H100CG-TR specifies 3.5 µA @ 100 V, indicating significantly lower leakage current at higher voltage.