MMDF2C03HDR2G Equivalent & Substitute Parts

Part Overview

The MMDF2C03HDR2G is a dual MOSFET array manufactured by onsemi, featuring integrated N-channel and P-channel MOSFETs in a single 8-SOIC surface mount package. This component is designed for logic-level gate drive applications with a maximum drain-source voltage rating of 30V and continuous drain currents of 4.1A (N-channel) and 3A (P-channel). The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (N-channel)	4.1	A
Continuous Drain Current (P-channel)	3	A
Rds On (Max) @ Id, Vgs	70	mOhm @ 3A, 10V
Vgs(th) (Max) @ Id	3	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	16	nC @ 10V
Input Capacitance (Ciss) (Max) @ Vds	630	pF @ 24V
Power Dissipation (Max)	2	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	8-SOIC	0.154" (3.90mm Width)
Configuration	N and P-Channel	Dual MOSFET Array
FET Feature	Logic Level Gate	—

Substitute Part Grouping Explanation

Substitution of the MMDF2C03HDR2G is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

Drain-source voltage rating must equal or exceed 30V
N-channel continuous drain current must meet or exceed 4.1A at 25°C
P-channel continuous drain current must meet or exceed 3A at 25°C
Logic-level gate drive capability must be maintained
Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Requirements:

Package must be 8-SOIC with 0.154" (3.90mm) width for PCB layout compatibility
Surface mount configuration required
Pin configuration must support dual N/P-channel MOSFET array topology

Regulatory and Supply Chain Considerations:

Product status and availability impact long-term design support
Moisture sensitivity level and compliance certifications must be documented

The ZXMC3A17DN8TA from Diodes Incorporated meets all electrical and mechanical substitution criteria while maintaining active product status.

Parameter Comparison

Parameter	MMDF2C03HDR2G (onsemi)	ZXMC3A17DN8TA (Diodes Inc.)	Compatibility
Drain to Source Voltage (Vdss)	30V	30V	Equivalent
Continuous Drain Current (N-channel)	4.1A	4.1A	Equivalent
Continuous Drain Current (P-channel)	3A	3.4A	Substitute Exceeds
Rds On (Max) @ Id, Vgs	70 mOhm @ 3A, 10V	50 mOhm @ 7.8A, 10V	Substitute Superior
Vgs(th) (Max) @ Id	3V @ 250µA	1V @ 250µA (Min)	Substitute Superior
Gate Charge (Qg) (Max) @ Vgs	16 nC @ 10V	12.2 nC @ 10V	Substitute Superior
Input Capacitance (Ciss) (Max) @ Vds	630 pF @ 24V	600 pF @ 25V	Equivalent
Power Dissipation (Max)	2W	1.25W	Substitute Lower
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	Equivalent
Package Type	8-SOIC (0.154", 3.90mm)	8-SO (0.154", 3.90mm)	Equivalent
Configuration	N and P-Channel	N and P-Channel	Equivalent
FET Feature	Logic Level Gate	Logic Level Gate	Equivalent
Product Status	Obsolete	Active	Substitute Preferred
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Primary Substitute: ZXMC3A17DN8TA

The ZXMC3A17DN8TA is the qualified substitute for the obsolete MMDF2C03HDR2G based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters meet or exceed the original specification. The N-channel and P-channel drain currents are equivalent or superior. Gate charge and input capacitance values are comparable, ensuring compatible switching performance in existing circuit topologies.

Mechanical Compatibility: Both components utilize identical 8-SOIC packaging with 0.154" (3.90mm) width, enabling direct PCB footprint compatibility without layout modifications.

Product Status and Supply Chain: The ZXMC3A17DN8TA maintains active product status with Diodes Incorporated, providing long-term availability and design support. This addresses the primary limitation of the obsolete MMDF2C03HDR2G.

Regulatory Compliance: Both components share equivalent REACH status (REACH Unaffected) and moisture sensitivity classification (MSL 1 - Unlimited), ensuring compliance with existing supply chain and manufacturing requirements.

Performance Characteristics: The substitute demonstrates superior performance in gate charge (12.2 nC vs. 16 nC) and on-resistance (50 mOhm vs. 70 mOhm), resulting in reduced switching losses and improved thermal efficiency in applications where the original part was thermally marginal.

Frequently Asked Questions (FAQ)

Q: Can the ZXMC3A17DN8TA be used as a direct replacement for the MMDF2C03HDR2G without circuit modifications?

A: Yes. Both components share identical voltage ratings (30V Vdss), equivalent drain current specifications, matching package geometry (8-SOIC, 3.90mm width), and identical operating temperature ranges (-55°C to 150°C). Pin configuration and logic-level gate drive characteristics are equivalent, enabling direct substitution at the PCB level.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance characteristics. The MMDF2C03HDR2G is obsolete, while the ZXMC3A17DN8TA is active. The substitute exhibits lower gate charge (12.2 nC vs. 16 nC), lower on-resistance (50 mOhm vs. 70 mOhm), and lower maximum power dissipation (1.25W vs. 2W). These differences favor the substitute in thermal and switching performance.

Q: Are there any package compatibility concerns?

A: No. Both components use 8-SOIC packaging with identical 0.154" (3.90mm) width specifications. PCB footprints are directly compatible without modification.

Q: Does the ZXMC3A17DN8TA meet the same regulatory requirements?

A: Yes. Both components share identical REACH status (REACH Unaffected), moisture sensitivity level (MSL 1 - Unlimited), and ECCN classification (EAR99). Regulatory compliance is maintained.

Q: What is the significance of the lower power dissipation rating on the substitute?

A: The ZXMC3A17DN8TA has a maximum power dissipation of 1.25W compared to 2W for the original part. This reflects improved on-resistance characteristics and does not indicate reduced capability. In applications where the original part operated near thermal limits, the substitute provides superior thermal performance.

Q: Is the P-channel current rating difference (3A vs. 3.4A) significant?

A: No. The substitute's higher P-channel rating (3.4A vs. 3A) exceeds the original specification, providing additional design margin without requiring circuit modifications.

Q: What should be verified before implementing this substitution in production?

A: Electrical parameter equivalence has been confirmed through direct specification comparison. Standard engineering practice requires functional validation in the target application circuit to confirm performance under actual operating conditions, including thermal behavior and switching characteristics.

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