FSV330AF Equivalent & Substitute Parts

Part Overview

The FSV330AF is a Schottky rectifier diode manufactured by onsemi, rated for 30 V DC reverse voltage and 3 A average rectified current in a DO-214AD (SMAF) surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The FSV330AF serves applications requiring fast recovery rectification with low forward voltage drop characteristics typical of Schottky technology.

Substiute Parts

FSV330AF

onsemiIn Stock: 15359FSV330AF Datasheet

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MBRAF440T3G

onsemiIn Stock: 54007MBRAF440T3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FSV330AF is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must support the maximum reverse voltage requirement of 30 V. Parts rated at higher voltages (40 V or greater) are acceptable as they provide margin above the original specification.

Current Rating Compatibility: The substitute part must support the average rectified current requirement of 3 A. Parts rated at 4 A or higher satisfy this requirement.

Technology Consistency: Both the main part and substitute must utilize Schottky rectifier technology to maintain equivalent switching characteristics and forward voltage performance.

Surface Mount Packaging: The substitute must be a surface mount device. While package variants (DO-214AD versus DO-221AC) differ in physical form factor, both are surface mount configurations suitable for automated assembly.

Temperature Range: The operating temperature range of -55°C to 150°C must be maintained or exceeded.

Compliance Standards: RoHS3 compliance and REACH unaffected status must be preserved.

The MBRAF440T3G meets all substitution criteria with higher voltage and current ratings, providing design margin while maintaining Schottky technology and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The MBRAF440T3G is a direct functional substitute for the FSV330AF based on the following engineering criteria:

Voltage and Current Margin: The MBRAF440T3G provides 10 V additional reverse voltage rating (40 V versus 30 V) and 1 A additional current capacity (4 A versus 3 A), ensuring the substitute operates within safe design margins for the original application.

Product Status: The MBRAF440T3G is classified as active, ensuring long-term availability and manufacturing continuity. The FSV330AF obsolete status necessitates this substitution for new designs and ongoing procurement.

Compliance Alignment: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity levels, ensuring regulatory and environmental requirements are preserved.

Electrical Performance: Forward voltage characteristics are equivalent or superior (485 mV at 4 A for the substitute versus 500 mV at 3 A for the original), with identical fast recovery switching speed specifications.

Package Consideration: The MBRAF440T3G uses DO-221AC (SMA-FL) packaging versus the FSV330AF DO-214AD (SMAF) packaging. Both are surface mount configurations; however, physical footprint differences require PCB layout verification during design transition.

Frequently Asked Questions (FAQ)

Q: Can the MBRAF440T3G directly replace the FSV330AF without circuit modification?

A: The MBRAF440T3G is electrically compatible with the FSV330AF for all specified operating parameters. However, the package change from DO-214AD to DO-221AC requires PCB footprint verification. Mechanical mounting and thermal characteristics may differ due to package geometry.

Q: What is the significance of the higher voltage rating (40 V) on the MBRAF440T3G?

A: The 40 V rating on the MBRAF440T3G provides design margin above the FSV330AF 30 V specification. This higher rating does not negatively impact performance in 30 V applications and enhances reliability by reducing stress on the semiconductor junction.

Q: Are there differences in reverse leakage current between these parts?

A: The FSV330AF specifies 100 µA reverse leakage at 30 V, while the MBRAF440T3G specifies 300 µA at 40 V. At the original 30 V operating point, the MBRAF440T3G leakage current would be lower than the specified 300 µA value, making it acceptable for the original application.

Q: Does the forward voltage difference affect circuit performance?

A: The MBRAF440T3G forward voltage (485 mV @ 4 A) is lower than the FSV330AF (500 mV @ 3 A), representing a 15 mV improvement. This difference reduces power dissipation and heat generation, providing a performance benefit in the substitution.

Q: What packaging considerations apply to this substitution?

A: The FSV330AF uses DO-214AD (SMAF) packaging, while the MBRAF440T3G uses DO-221AC (SMA-FL) packaging. Both are surface mount packages suitable for automated assembly. Physical dimensions and land pattern differ; PCB layout and pick-and-place programming require updates for the new package.

Q: Is the MBRAF440T3G suitable for new design applications?

A: Yes. The MBRAF440T3G active product status ensures manufacturing availability and long-term supply continuity. It is appropriate for both replacement of obsolete FSV330AF components and new design implementations requiring 30 V, 3 A Schottky rectifier functionality.

Q: How do the temperature operating ranges compare?

A: Both parts operate across identical temperature ranges (-55°C to 150°C junction temperature), ensuring thermal performance equivalence across all operating environments.