MBRF1635-E3/45 Equivalent & Substitute Parts

Part Overview

The MBRF1635-E3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 35 V DC reverse voltage and 16 A average rectified current. This component is housed in a TO-220-2 Full Pack isolated tab package (ITO-220AC) and is designed for through-hole mounting applications requiring fast recovery characteristics. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when application parameters permit alternative specifications.

Substiute Parts

MBRF1635-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 2154MBRF1635-E3/45 Datasheet

Current PartRFQ

STPS1545FP

STMicroelectronicsIn Stock: 1554STPS1545FP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBRF1635-E3/45 is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must support the application's maximum reverse voltage requirement. The MBRF1635-E3/45 operates at 35 V maximum reverse voltage. Substitute parts with equal or higher voltage ratings are acceptable for direct substitution.

Current Rating Compatibility: The substitute part must support the application's average rectified current requirement. The MBRF1635-E3/45 is rated for 16 A. Substitute parts with equal or higher current ratings are acceptable for direct substitution.

Technology Consistency: Both the main part and substitute must employ Schottky diode technology to maintain consistent forward voltage characteristics and fast recovery performance.

Speed Characteristics: Fast recovery performance (≤ 500ns, > 200mA) must be maintained in substitute parts to ensure switching performance and minimize reverse recovery losses.

Package and Mounting: The substitute part must use through-hole mounting in a TO-220 package family to ensure mechanical and thermal compatibility with existing PCB designs and thermal management solutions.

Compliance and Certifications: Substitute parts must maintain RoHS3 compliance and equivalent moisture sensitivity ratings to satisfy regulatory and environmental requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The MBRF1635-E3/45 remains the primary selection for applications requiring exactly 35 V reverse voltage rating and 16 A average rectified current with isolated tab thermal management in the ITO-220AC package configuration.

Substitute Part Applicability: The STPS1545FP is suitable as a substitute when the following conditions are met:

1. Application maximum reverse voltage does not exceed 35 V (the substitute's 45 V rating provides margin)
2. Application maximum average rectified current does not exceed 15 A (the substitute's 15 A rating is 1 A lower than the main part)
3. Forward voltage drop increase from 630 mV to 840 mV (at different test conditions) is acceptable within circuit design parameters
4. PCB layout accommodates the TO-220FPAC package variant (non-isolated tab configuration)
5. Thermal design accepts the substitute's maximum junction temperature of 175°C versus the main part's 150°C

Compliance Equivalence: Both parts maintain identical RoHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status, ensuring regulatory and environmental requirement satisfaction.

Inventory and Procurement: The STPS1545FP provides procurement flexibility with 1450 units in stock versus 2058 units for the MBRF1635-E3/45, supporting supply chain continuity and design redundancy strategies.

Frequently Asked Questions (FAQ)

Q: Can the STPS1545FP directly replace the MBRF1635-E3/45 in all applications?

A: Direct substitution is not universal. The STPS1545FP is suitable only when application current requirements do not exceed 15 A. Applications requiring the full 16 A rating of the MBRF1635-E3/45 must use the primary part. Additionally, the higher forward voltage of the STPS1545FP (840 mV @ 30 A versus 630 mV @ 16 A) must be evaluated within circuit design parameters.

Q: What is the significance of the isolated tab difference between ITO-220AC and TO-220FPAC packages?

A: The ITO-220AC package features an isolated tab, electrically separating the tab from the diode cathode. The TO-220FPAC package uses a standard TO-220-2 configuration. This difference affects thermal management and electrical isolation requirements. Applications requiring electrical isolation of the tab must use the ITO-220AC package (MBRF1635-E3/45).

Q: Are both parts suitable for the same operating temperature range?

A: Both parts operate within overlapping temperature ranges. The MBRF1635-E3/45 operates from -65°C to 150°C junction temperature, while the STPS1545FP operates to a maximum of 175°C. The substitute provides higher temperature margin but does not extend the minimum operating temperature. Applications operating below -65°C require the MBRF1635-E3/45.

Q: How do the reverse leakage characteristics compare?

A: Both parts specify 200 µA reverse leakage current. The MBRF1635-E3/45 is measured at 35 V, while the STPS1545FP is measured at 45 V. At equivalent voltage levels, leakage characteristics are comparable, supporting substitution in applications where leakage current is a design constraint.

Q: What is the impact of the 1 A current rating difference?

A: The STPS1545FP is rated for 15 A average rectified current versus 16 A for the MBRF1635-E3/45. This 1 A difference eliminates the substitute from applications requiring the full 16 A rating. Applications operating at or below 15 A average rectified current can use the substitute without derating.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the MBRF1635-E3/45 and STPS1545FP are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. Regulatory and environmental compliance requirements are equivalent between the two parts.