MMDF2N02ER2 Equivalent & Substitute Parts

Part Overview

The MMDF2N02ER2 is a dual N-channel MOSFET array manufactured by onsemi, designed for surface mount applications in 8-SOIC packaging. This device features a 25V drain-to-source voltage rating with 3.6A continuous drain current capability and logic level gate operation. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

MMDF2N02ER2

onsemiIn Stock: 6996MMDF2N02ER2 Datasheet

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IRF7103TRPBF

Infineon TechnologiesIn Stock: 17412IRF7103TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMDF2N02ER2 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Configuration: Dual N-channel MOSFET array
• Drain-to-source voltage rating must equal or exceed 25V
• Continuous drain current must meet or exceed 3.6A at 25°C
• Gate threshold voltage (Vgs(th)) must be compatible with logic level operation (≤3V @ 250µA)
• On-state resistance (Rds On) must not significantly degrade circuit performance
• Gate charge and input capacitance must be within acceptable switching speed parameters

Mechanical Compatibility Criteria:

• Surface mount package in 8-SOIC configuration
• Package dimensions: 0.154" width (3.90mm)
• Thermal performance: 2W maximum power dissipation capability
• Operating temperature range: -55°C to 150°C

The IRF7103TRPBF meets these substitution criteria through equivalent configuration, compatible package geometry, and electrical parameters that satisfy the functional requirements of the MMDF2N02ER2.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: IRF7103TRPBF

The IRF7103TRPBF from Infineon Technologies is the qualified substitute for the obsolete MMDF2N02ER2. Selection is based on the following engineering factors:

Product Status Alignment: The IRF7103TRPBF maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete MMDF2N02ER2.

Compliance and Certification: The IRF7103TRPBF is ROHS3 compliant, meeting current regulatory requirements. Both parts maintain REACH unaffected status and EAR99 export classification.

Electrical Parameter Compatibility:

• Dual N-channel configuration matches the original device
• 50V Vdss rating exceeds the 25V requirement, providing design margin
• Gate threshold voltage (3V @ 250µA) is identical, ensuring compatible gate drive circuits
• Gate charge (30 nC @ 10V) is identical, maintaining switching characteristics
• Operating temperature range (-55°C to 150°C) is identical

Application-Specific Considerations: The IRF7103TRPBF continuous drain current rating of 3A is lower than the MMDF2N02ER2 rating of 3.6A. Circuit designs operating at continuous currents exceeding 3A require thermal analysis to confirm adequate performance margin. The substitute's on-state resistance of 130 mOhm (versus 100 mOhm) results in increased power dissipation at equivalent current levels.

Package and Thermal Compatibility: Both devices utilize identical 8-SOIC surface mount packaging with 0.154" width (3.90mm), enabling direct PCB layout compatibility. Maximum power dissipation is 2W for both devices.

Frequently Asked Questions (FAQ)

Q: Can the IRF7103TRPBF directly replace the MMDF2N02ER2 in existing designs?

A: Direct replacement is possible for applications where continuous drain current does not exceed 3A. The identical package geometry, gate threshold voltage, and gate charge enable pin-for-pin substitution. Designs operating at continuous currents between 3A and 3.6A require thermal analysis to confirm adequate performance margin given the substitute's higher on-state resistance.

Q: What is the impact of the higher on-state resistance in the IRF7103TRPBF?

A: The IRF7103TRPBF exhibits 130 mOhm on-state resistance compared to 100 mOhm in the MMDF2N02ER2. At equivalent current levels, this results in increased power dissipation. For a 3A load, the power dissipation difference is approximately 0.27W, which may require thermal management review in power-sensitive applications.

Q: Are the gate drive requirements identical between these devices?

A: Yes. Both devices feature identical gate threshold voltage (3V @ 250µA) and gate charge (30 nC @ 10V), enabling use of the same gate drive circuitry without modification.

Q: Does the lower input capacitance of the IRF7103TRPBF affect circuit performance?

A: The IRF7103TRPBF input capacitance of 290 pF (at 25V) is lower than the MMDF2N02ER2 capacitance of 532 pF (at 16V). Lower input capacitance generally results in faster switching transitions and reduced gate drive power requirements, which are beneficial characteristics in most applications.

Q: What is the significance of the higher Vdss rating in the IRF7103TRPBF?

A: The IRF7103TRPBF 50V Vdss rating exceeds the MMDF2N02ER2 25V rating, providing additional voltage margin for transient overvoltage protection. This higher rating does not negatively impact performance in 25V applications and may improve reliability in circuits subject to voltage spikes.

Q: Are there any compliance differences between these devices?

A: The IRF7103TRPBF is ROHS3 compliant, while the MMDF2N02ER2 is RoHS non-compliant. For applications subject to RoHS requirements, the IRF7103TRPBF is the required choice. Both devices maintain REACH unaffected status.

Q: Can both channels within the IRF7103TRPBF be used simultaneously at maximum current?

A: The 3A continuous drain current rating applies to individual channels. Simultaneous operation of both channels at maximum current requires thermal analysis to ensure the 2W maximum power dissipation limit is not exceeded, accounting for the combined power dissipation of both channels.