MA3D752 Equivalent & Substitute Parts

Part Overview

The MA3D752 is a Schottky diode array manufactured by Panasonic Electronic Components, configured as a 1 Pair Common Cathode arrangement with a 40 V DC reverse voltage rating and 20 A average rectified current per diode. The device is packaged in a TO-220-3 Full Pack through-hole configuration and features fast recovery characteristics suitable for high-frequency rectification applications.

The MA3D752 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

MA3D752

Panasonic Electronic ComponentsIn Stock: 1109MA3D752 Datasheet

Current PartRFQ

RB205T-40

Rohm SemiconductorIn Stock: 2411RB205T-40 Datasheet

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RB215T-40

Rohm SemiconductorIn Stock: 2869RB215T-40 Datasheet

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RB225T-40

Rohm SemiconductorIn Stock: 803RB225T-40 Datasheet

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SBR4040CTFP

Diodes IncorporatedIn Stock: 2685SBR4040CTFP Datasheet

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FMW-2204

Sanken Electric USA Inc.In Stock: 3219FMW-2204 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MA3D752 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky or Super Barrier (functionally equivalent for rectification)
• Voltage - DC Reverse (Vr) (Max): 40 V (minimum requirement)
• Current - Average Rectified (Io) (per Diode): 20 A (minimum requirement)
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack

Allowable Variations:

• Forward voltage (Vf) may vary within typical Schottky diode specifications
• Reverse leakage current may vary
• Operating temperature range may extend beyond the original specification
• Supplier device package designation may differ (TO-220D-A1, TO-220FN, ITO-220AB)

Substitute parts are grouped into two categories:

1. Direct Equivalents: Parts meeting or exceeding all critical parameters with identical or superior electrical performance
2. Parametric Equivalents: Parts with identical voltage and current ratings but potentially different secondary characteristics

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Full Electrical Equivalence):

SBR4040CTFP (Diodes Incorporated) is the primary recommended substitute. This part meets all critical electrical parameters with 40 V reverse voltage and 20 A average rectified current. The Super Barrier technology provides equivalent rectification performance to Schottky technology. The device features an extended operating temperature range (-65°C ~ 150°C) and is RoHS3 compliant and REACH unaffected. Product status is active, ensuring long-term availability. The isolated tab package variant (ITO-220AB) provides additional design flexibility for thermal management applications.

FMW-2204 (Sanken Electric USA Inc.) provides parametric equivalence with identical 40 V and 20 A ratings. This part is classified as obsolete, limiting its suitability for new designs requiring long-term supply assurance. However, it remains available in inventory (3200 Pcs) and is RoHS compliant.

Current-Limited Substitutes (Reduced Current Rating):

RB215T-40 (Rohm Semiconductor) provides a 10 A average rectified current rating, which is 50% of the MA3D752 specification. This part is suitable only for applications where the actual operating current does not exceed 10 A per diode. The device is active and RoHS3 compliant. Use of this part requires verification that circuit current requirements do not exceed the 10 A limit.

RB205T-40 (Rohm Semiconductor) provides a 7.5 A average rectified current rating, which is 37.5% of the MA3D752 specification. This part is suitable only for low-current applications. The device is active and RoHS3 compliant.

RB225T-40 (Rohm Semiconductor) provides a 15 A average rectified current rating, which is 75% of the MA3D752 specification. This part is suitable for applications where the actual operating current does not exceed 15 A per diode. The device is active and RoHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can RB215T-40 be used as a direct replacement for MA3D752?

A: RB215T-40 is not a direct replacement. While it maintains the same 40 V reverse voltage rating and identical forward voltage characteristics, the current rating is reduced to 10 A per diode compared to the MA3D752's 20 A rating. This part is suitable only if the application circuit operates at or below 10 A per diode. Exceeding this current limit will result in device failure.

Q: What is the difference between Schottky and Super Barrier diode technology?

A: Both technologies are fast-recovery rectifier diodes suitable for high-frequency applications. The provided specifications indicate that Super Barrier technology (SBR4040CTFP) delivers equivalent electrical performance to Schottky technology (MA3D752) for the 40 V, 20 A application. Selection between these technologies is based on the provided electrical parameters rather than technology designation.

Q: Is the isolated tab variant of SBR4040CTFP compatible with the MA3D752?

A: Yes. The SBR4040CTFP is supplied in an ITO-220AB package (isolated tab variant) rather than the standard TO-220-3 package. The isolated tab provides electrical isolation between the device tab and the mounting surface, which may be beneficial for thermal management in certain circuit designs. Pin configuration and electrical function remain compatible with the MA3D752 application.

Q: Why is the MA3D752 classified as obsolete?

A: The MA3D752 is no longer manufactured by Panasonic Electronic Components. Active substitute parts from manufacturers including Rohm Semiconductor, Diodes Incorporated, and Sanken Electric USA Inc. are available to support ongoing applications.

Q: Can FMW-2204 be used as a long-term substitute?

A: FMW-2204 provides full parametric equivalence with the MA3D752 (40 V, 20 A, Schottky technology). However, FMW-2204 is also classified as obsolete. While inventory is currently available (3200 Pcs), long-term supply assurance is not guaranteed. For new designs or applications requiring extended production support, SBR4040CTFP is the recommended choice due to its active product status.

Q: What are the thermal considerations when selecting a substitute?

A: The MA3D752 operates over a junction temperature range of -40°C ~ 125°C. Substitute parts offer extended temperature ranges: SBR4040CTFP (-65°C ~ 150°C), FMW-2204 (-40°C ~ 150°C), and Rohm parts (150°C maximum). These extended ranges provide additional design margin for thermal management. Forward voltage and reverse leakage current specifications provided in the parameter comparison table should be evaluated for the specific operating temperature of the application.

Q: Are all substitute parts RoHS compliant?

A: SBR4040CTFP, RB215T-40, RB225T-40, and RB205T-40 are RoHS3 compliant. FMW-2204 is RoHS compliant. All parts listed have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.