ZXMP3F30FHTA Equivalent & Substitute Parts

Part Overview

The ZXMP3F30FHTA is a P-Channel 30V 2.8A surface mount MOSFET manufactured by Diodes Incorporated in SOT-23-3 packaging. This device is classified as Active product status and is suitable for general-purpose switching and amplification applications requiring P-channel field effect transistor functionality. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters within the 30V drain-source voltage class and SOT-23-3 form factor.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	2.8	A
Rds On (Max) @ Id, Vgs	80 mOhm @ 2.5A, 10V	mOhm
Gate Charge (Qg) @ Vgs	7	nC @ 10V
Power Dissipation (Max)	950	mW
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	SOT-23-3	Surface Mount
FET Type	P-Channel	MOSFET

Substitute Part Grouping Explanation

Substitution eligibility for the ZXMP3F30FHTA is determined by the following critical parameters:

Primary Matching Criteria:

Drain to Source Voltage (Vdss): 30V (exact match required)
FET Type: P-Channel (exact match required)
Package: SOT-23-3 or compatible surface mount variant
Operating Temperature Range: -55°C to 150°C (minimum requirement)
Continuous Drain Current (Id): Equal to or greater than 2.8A
Rds On (Max): Equal to or less than specified value at rated conditions
Power Dissipation: Sufficient for application requirements

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Unaffected status

Substitute parts must satisfy all primary matching criteria and compliance requirements. Parts with higher current ratings, lower on-resistance, or higher power dissipation ratings are acceptable as functional equivalents provided they maintain the same voltage class and package footprint compatibility.

Parameter Comparison

Parameter	ZXMP3F30FHTA (Main)	AO3421E	FDN360P	PMV35EPER
Manufacturer	Diodes Incorporated	Alpha & Omega Semiconductor Inc.	onsemi	Nexperia USA Inc.
Vdss (V)	30	30	30	30
Id @ 25°C (A)	2.8	3	2	5.3
Rds On (Max) @ Vgs 10V (mOhm)	80 @ 2.5A	95 @ 3A	80 @ 2A	45 @ 4.2A
Gate Charge (Qg) @ 10V (nC)	7	8	9	19.2
Power Dissipation (Max) (mW)	950	1400	500	480 (Ta) / 1200 (Tc)
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	SOT-23-3	SOT-23-3	SOT-23-3	TO-236AB
Product Status	Active	Not For New Designs	Active	Active
RoHS3 Compliant	Yes	Yes	Yes	Yes
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

AO3421E (Alpha & Omega Semiconductor Inc.)

The AO3421E meets all primary electrical matching criteria with a 30V Vdss rating, P-Channel configuration, and SOT-23-3 package. The device provides 3A continuous drain current, exceeding the 2.8A requirement of the main part. However, the AO3421E carries a "Not For New Designs" product status designation, indicating this part is in mature or declining production phase. This part is suitable for replacement applications in existing designs but is not recommended for new product development. RoHS3 compliance and MSL 1 rating are confirmed.

FDN360P (onsemi)

The FDN360P is an Active product from onsemi featuring the PowerTrench® series technology. It maintains 30V Vdss and P-Channel configuration with SOT-23-3 package compatibility. The continuous drain current rating is 2A, which is lower than the main part's 2.8A specification. The FDN360P exhibits equivalent on-resistance performance (80 mOhm @ 10V) and lower power dissipation (500mW). This part is suitable for applications where the 2A current rating is sufficient. Full RoHS3 compliance and MSL 1 rating are confirmed. Active product status supports use in new designs.

PMV35EPER (Nexperia USA Inc.)

The PMV35EPER is an Active product with 30V Vdss and P-Channel configuration. This device provides the highest continuous drain current rating at 5.3A and the lowest on-resistance at 45 mOhm @ 10V among the substitute options. The package designation is TO-236AB, which is mechanically and electrically compatible with SOT-23-3 footprints. Power dissipation is rated at 480mW (Ta) or 1.2W (Tc), providing thermal flexibility. Gate charge is elevated at 19.2 nC compared to the main part. RoHS3 compliance and MSL 1 rating are confirmed. Active product status supports new design implementation.

Frequently Asked Questions (FAQ)

Q: Can the AO3421E directly replace the ZXMP3F30FHTA in existing designs?

A: The AO3421E is electrically compatible with the ZXMP3F30FHTA, meeting all critical parameters including 30V Vdss, P-Channel type, and SOT-23-3 package. The higher 3A current rating provides margin above the 2.8A requirement. However, the "Not For New Designs" status indicates this part is in mature production phase. For existing production runs requiring replacement stock, the AO3421E is functionally suitable.

Q: What is the primary difference between FDN360P and the main part?

A: The FDN360P has a lower continuous drain current rating of 2A compared to the ZXMP3F30FHTA's 2.8A. This difference is the limiting factor for substitution. If the application circuit operates at or below 2A, the FDN360P is a direct substitute. If sustained operation above 2A is required, the FDN360P is not suitable. On-resistance and power dissipation characteristics are comparable.

Q: Is PMV35EPER package compatible with SOT-23-3 PCB layouts?

A: The PMV35EPER uses TO-236AB packaging, which is mechanically and electrically compatible with SOT-23-3 footprints. Both packages share the same three-pin configuration and pin spacing. PCB layout modifications are not required for package substitution. Verify component placement clearances with your PCB design documentation.

Q: Which substitute part is recommended for new product designs?

A: Both FDN360P and PMV35EPER carry Active product status and are suitable for new designs. Selection depends on application current requirements. For applications requiring 2.8A or higher continuous current, the PMV35EPER is the appropriate choice due to its 5.3A rating. For applications operating at 2A or below, the FDN360P provides an Active alternative with lower power dissipation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The ZXMP3F30FHTA, AO3421E, FDN360P, and PMV35EPER are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. All parts are REACH Unaffected and carry EAR99 export classification.

Q: What is the significance of gate charge differences among these parts?

A: Gate charge (Qg) affects switching speed and driver circuit requirements. The main part has 7 nC gate charge, while substitutes range from 8 nC (AO3421E) to 19.2 nC (PMV35EPER). Higher gate charge requires more driver current to achieve the same switching speed. If the gate driver circuit has current limitations, verify that the substitute part's gate charge is compatible with driver specifications.

Q: Can I use PMV35EPER in a circuit designed for 2.8A operation?

A: Yes. The PMV35EPER's 5.3A continuous current rating exceeds the 2.8A requirement, providing operational margin. The lower on-resistance (45 mOhm versus 80 mOhm) results in reduced power dissipation in the FET itself. Higher gate charge (19.2 nC) may require verification of gate driver capability, but electrical operation is compatible.

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