SBL835 Equivalent & Substitute Parts

Part Overview

The SBL835 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 35 V DC reverse voltage and 8 A average rectified current in a Through Hole TO-220AC package. This component is classified as Obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The SBL835 is suitable for applications requiring fast recovery rectification in power supply and switching circuits.

Substiute Parts

SBL835

Diodes IncorporatedIn Stock: 961SBL835 Datasheet

Current PartRFQ

MBR745G

onsemiIn Stock: 21752MBR745G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBL835 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 35 V
• Current - Average Rectified (Io) rating must equal or exceed 8 A
• Technology must be Schottky for equivalent switching characteristics
• Speed classification must be Fast Recovery (≤ 500ns, > 200mA)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: TO-220-2 or equivalent TO-220AC footprint

Compliance Criteria:

• RoHS3 Compliance required
• Operating Temperature range must support -65°C to 150°C minimum

The MBR745G meets these substitution criteria with higher voltage and temperature ratings, providing design margin for applications previously using the SBL835.

Parameter Comparison

Engineering Selection Recommendations

The MBR745G is an active substitute for the obsolete SBL835. Both components are ROHS3 compliant Schottky rectifier diodes with identical fast recovery speed characteristics and Through Hole TO-220-2 package compatibility.

The MBR745G provides higher voltage rating (45 V versus 35 V) and extended operating temperature range (-65°C to 175°C versus -65°C to 150°C), offering improved design margin for thermal and voltage stress conditions. The MBR745G current rating of 7.5 A is within 6.25% of the SBL835 8 A specification, suitable for applications where the full 8 A rating is not required at continuous operation.

The MBR745G is currently in active production with substantial inventory availability, ensuring long-term procurement continuity compared to the obsolete SBL835.

Frequently Asked Questions (FAQ)

Q: Can the MBR745G directly replace the SBL835 in existing circuit designs?

A: Yes. Both components share identical package footprints (TO-220-2), mounting type (Through Hole), and fast recovery Schottky technology. The MBR745G meets or exceeds all critical electrical parameters of the SBL835.

Q: What is the current rating difference between these parts?

A: The SBL835 is rated for 8 A average rectified current, while the MBR745G is rated for 7.5 A. For applications operating at or below 7.5 A continuous current, the MBR745G is fully compatible. Applications requiring the full 8 A rating should verify actual operating current levels.

Q: Are there thermal considerations when substituting these parts?

A: The MBR745G supports a higher maximum junction temperature (175°C versus 150°C). Both components operate across the same minimum temperature (-65°C). The MBR745G provides additional thermal margin in high-temperature environments.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SBL835 and MBR745G are ROHS3 compliant and classified under the same HTSUS code (8541.10.0080). Both carry EAR99 ECCN classification.

Q: Why is the MBR745G rated for higher voltage (45 V versus 35 V)?

A: The MBR745G is designed for applications requiring higher reverse voltage withstand capability. The higher rating provides design margin and does not negatively impact performance in 35 V applications.

Q: What is the reverse leakage current difference?

A: The SBL835 exhibits 500 µA reverse leakage at 35 V, while the MBR745G exhibits 100 µA reverse leakage at 45 V. Lower reverse leakage in the MBR745G indicates improved leakage characteristics.