MA3D649 Equivalent & Substitute Parts

Part Overview

The MA3D649 is a general-purpose diode array manufactured by Panasonic Electronic Components, configured as a 1 Pair Common Cathode rectifier with 200 V reverse voltage rating and 5 A average rectified current per diode. The device is packaged in a Through Hole TO-220-3 Full Pack configuration and operates across a junction temperature range of -40°C to 150°C.

The MA3D649 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 diode array configuration.

Substiute Parts

MA3D649

Panasonic Electronic ComponentsIn Stock: 1184MA3D649 Datasheet

Current PartRFQ

BYVF32-200-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 2805BYVF32-200-E3/45 Datasheet

SimilarRFQ

FFPF20UP20DNTU

onsemiIn Stock: 3315FFPF20UP20DNTU Datasheet

SimilarRFQ

RF1601T2D

Rohm SemiconductorIn Stock: 2124RF1601T2D Datasheet

SimilarRFQ

FMX-12S

Sanken Electric USA Inc.In Stock: 4152FMX-12S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MA3D649 are selected based on strict electrical and mechanical compatibility criteria. The following parameters must align with the main part specifications to establish a valid substitution relationship:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 200 V
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack

Allowable Parameter Variations: Substitute parts may exceed the main part's current rating (Io), forward voltage (Vf), reverse recovery time (trr), and reverse leakage current specifications, provided the core electrical and mechanical parameters remain constant. Parts with higher current ratings, lower forward voltages, faster recovery times, or lower leakage currents are functionally compatible and represent performance enhancements or equivalent alternatives.

Substitute Parts Identified:

1. FMX-12S (Sanken Electric USA Inc.) – Parametric Equivalent: Identical electrical specifications and forward voltage characteristics; obsolete status
2. BYVF32-200-E3/45 (Vishay General Semiconductor) – Enhanced Current Rating: 18 A per diode; active product status; isolated tab variant
3. FFPF20UP20DNTU (onsemi) – Enhanced Current Rating: 10 A per diode; avalanche technology; obsolete status
4. RF1601T2D (Rohm Semiconductor) – Enhanced Current Rating: 8 A per diode; active product status

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Long-Term Supply:

The BYVF32-200-E3/45 (Vishay General Semiconductor) and RF1601T2D (Rohm Semiconductor) are recommended as primary substitutes. Both parts carry active product status, ensuring ongoing availability and manufacturing support. The BYVF32-200-E3/45 provides enhanced current capacity (18 A per diode) with improved reverse recovery time (25 ns) and lower reverse leakage current (10 µA @ 200 V). The RF1601T2D offers intermediate current capacity (8 A per diode) with equivalent reverse recovery time (30 ns) and superior reverse leakage characteristics (10 µA @ 200 V). Both parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

For Existing Inventory and Legacy Applications:

The FMX-12S (Sanken Electric USA Inc.) provides parametric equivalence with identical electrical specifications and forward voltage characteristics. This part is suitable for direct replacement in applications where current capacity is not a limiting factor. However, FMX-12S carries obsolete product status, limiting its long-term availability.

For Current-Limited Applications:

The FFPF20UP20DNTU (onsemi) offers intermediate current capacity (10 A per diode) and is suitable for applications requiring higher current handling than the main part. This part utilizes avalanche technology and carries ROHS3 compliance. However, it exhibits higher reverse recovery time (45 ns) and elevated reverse leakage current (100 µA @ 200 V) compared to the main part, and carries obsolete product status.

Frequently Asked Questions (FAQ)

Q: Can the BYVF32-200-E3/45 be used as a direct replacement for the MA3D649?

A: Yes. The BYVF32-200-E3/45 maintains identical diode configuration (1 Pair Common Cathode), reverse voltage rating (200 V), mounting type (Through Hole), and package type (TO-220-3 Full Pack). The higher current rating (18 A versus 5 A per diode) represents a performance enhancement and does not compromise compatibility. The isolated tab variant provides additional thermal management capability.

Q: What is the significance of the isolated tab in the BYVF32-200-E3/45?

A: The isolated tab (ITO-220AB package) provides electrical isolation between the tab and the semiconductor junction, enabling independent thermal management without electrical coupling to the mounting surface. This feature is beneficial in applications requiring isolated heat dissipation paths but does not affect functional compatibility with designs utilizing standard TO-220-3 packages.

Q: Why is the RF1601T2D recommended over the FFPF20UP20DNTU?

A: Both parts are functionally compatible substitutes. The RF1601T2D is recommended for new designs due to its active product status, ensuring long-term availability and manufacturing continuity. The RF1601T2D also exhibits lower reverse recovery time (30 ns versus 45 ns) and lower reverse leakage current (10 µA versus 100 µA @ 200 V), providing superior electrical performance characteristics.

Q: Is the FMX-12S suitable for new production designs?

A: The FMX-12S provides parametric equivalence with the MA3D649 and is electrically suitable for new designs. However, its obsolete product status limits long-term supply availability. For applications requiring extended production runs or future design iterations, BYVF32-200-E3/45 or RF1601T2D are preferred alternatives.

Q: What are the thermal operating range differences between substitute parts?

A: The MA3D649 operates from -40°C to 150°C junction temperature. The BYVF32-200-E3/45 and FFPF20UP20DNTU extend the lower operating limit to -65°C, providing enhanced cold-temperature performance. The RF1601T2D specifies a maximum junction temperature of 150°C without a defined minimum, consistent with the main part's upper limit.

Q: Are all substitute parts RoHS compliant?

A: The FMX-12S is RoHS Compliant. The BYVF32-200-E3/45, FFPF20UP20DNTU, and RF1601T2D are ROHS3 Compliant, meeting the most current regulatory requirements. All parts carry ECCN EAR99 classification and HTSUS 8541.10.0080 tariff code.

Q: Can higher-current-rated substitutes be used in applications designed for 5 A operation?

A: Yes. Parts with higher current ratings (BYVF32-200-E3/45 at 18 A, FFPF20UP20DNTU at 10 A, RF1601T2D at 8 A) are fully compatible with applications designed for 5 A operation. The higher current capacity provides design margin and does not introduce functional incompatibility. Thermal management and PCB layout considerations remain unchanged.