MBRF1035-E3/45 Schottky Diode Equivalent & Substitute Parts

Part Overview

The MBRF1035-E3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 35 V DC reverse voltage and 10 A average rectified current in a through-hole TO-220-2 package with isolated tab. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

MBRF1035-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 669MBRF1035-E3/45 Datasheet

Current PartRFQ

MBRF1045-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1223MBRF1045-E3/45 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRF1035-E3/45 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Technology: Schottky rectifier diode
• Current - Average Rectified (Io): 10 A minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-2 Full Pack, Isolated Tab
• Operating Temperature Range: -65°C to 150°C minimum
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 35 V
• Voltage - Forward (Vf): Lower values are acceptable for improved efficiency
• Current - Reverse Leakage: Equal to or lower values are acceptable

The MBRF1045-E3/45 qualifies as a direct substitute because it maintains identical current rating, package configuration, mounting type, temperature range, and compliance certifications while providing higher reverse voltage rating and improved forward voltage characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MBRF1045-E3/45 is the qualified substitute for the obsolete MBRF1035-E3/45 based on the following engineering criteria:

Product Status Alignment: The MBRF1045-E3/45 maintains active product status with Vishay General Semiconductor - Diodes Division, ensuring continued availability and manufacturing support. The original MBRF1035-E3/45 is obsolete, making substitution necessary for production continuity.

Compliance Certification: Both parts maintain identical ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory and environmental compatibility in existing designs.

Electrical Performance: The substitute part provides superior electrical characteristics through higher reverse voltage rating (45 V versus 35 V) and improved forward voltage performance (570 mV @ 10 A versus 840 mV @ 20 A), delivering enhanced reliability margins and reduced power dissipation.

Physical and Functional Compatibility: Identical mounting type (Through Hole), package configuration (TO-220-2 Full Pack, Isolated Tab), and operating temperature range (-65°C to 150°C) ensure direct mechanical and thermal compatibility without circuit board redesign.

Current and Speed Specifications: Matching 10 A average rectified current and fast recovery characteristics (≤ 500ns, > 200mA) maintain functional equivalence in rectification applications.

Frequently Asked Questions (FAQ)

Q: Can the MBRF1045-E3/45 directly replace the MBRF1035-E3/45 in existing circuit designs?

A: Yes. The MBRF1045-E3/45 provides direct substitution with identical mounting type, package configuration, current rating, and operating temperature range. The higher reverse voltage rating (45 V versus 35 V) and improved forward voltage characteristics create additional design margins without requiring circuit modifications.

Q: What is the primary reason for substituting the MBRF1035-E3/45?

A: The MBRF1035-E3/45 is classified as obsolete. The MBRF1045-E3/45 is an active product from the same manufacturer, ensuring continued supply, manufacturing support, and compliance with current regulatory standards.

Q: Are there any thermal or mechanical differences between these parts?

A: No. Both parts utilize identical TO-220-2 Full Pack, Isolated Tab packaging, through-hole mounting configuration, and operate across the same temperature range (-65°C to 150°C). Thermal and mechanical characteristics are equivalent.

Q: How do the forward voltage specifications compare?

A: The MBRF1045-E3/45 exhibits improved forward voltage performance at 570 mV @ 10 A compared to the MBRF1035-E3/45 at 840 mV @ 20 A. This improvement reduces power dissipation and heat generation in rectification circuits.

Q: Are compliance certifications maintained with the substitute part?

A: Yes. Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings. No compliance changes occur with substitution.

Q: What is the significance of the higher reverse voltage rating on the substitute part?

A: The MBRF1045-E3/45 is rated for 45 V reverse voltage compared to 35 V on the original part. This higher rating provides additional safety margin in applications operating near the original voltage specification and accommodates transient voltage spikes without exceeding device ratings.

Q: Is the reverse leakage current specification affected by the voltage rating difference?

A: The reverse leakage current remains at 100 µA, measured at the respective rated voltages (35 V for the original part, 45 V for the substitute). This specification is equivalent across both parts.

Q: Can inventory of the MBRF1035-E3/45 be used interchangeably with the MBRF1045-E3/45?

A: Yes. The parts are electrically and mechanically interchangeable. Existing inventory of the MBRF1035-E3/45 can be used in applications designed for either part number without performance degradation.