AON7403 MOSFET P-Channel 30V Equivalent & Substitute Parts

Part Overview

The AON7403 is a P-Channel MOSFET rated for 30V drain-to-source voltage with continuous drain current of 11A (Ta) and 29A (Tc). This device is packaged in an 8-DFN-EP (3x3) surface mount configuration and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	11A (Ta), 29A (Tc)	A
Rds On (Max) @ Id, Vgs	18 mOhm @ 8A, 10V	mOhm
Vgs(th) (Max) @ Id	3V @ 250µA	V
Gate Charge (Qg) (Max) @ Vgs	24 nC @ 15V	nC
Vgs (Max)	±25	V
Input Capacitance (Ciss) (Max) @ Vds	1400 pF @ 15V	pF
Power Dissipation (Max)	3.1W (Ta), 25W (Tc)	W
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package	8-DFN-EP (3x3)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the AON7403 is determined by the following critical parameters:

Mandatory Matching Parameters:

FET Type: P-Channel
Drain to Source Voltage (Vdss): 30V
Operating Temperature Range: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
RoHS3 Compliance
MSL Level 1

Performance Compatibility Parameters:

Continuous Drain Current (Id): Must meet or exceed 11A (Ta) or 29A (Tc)
Rds On (Max): Must be equal to or lower than 18 mOhm @ specified conditions
Vgs(th) (Max): Must be equal to or lower than 3V @ 250µA
Gate Charge (Qg): Lower values indicate faster switching
Input Capacitance (Ciss): Lower values reduce gate drive requirements
Power Dissipation: Must support thermal requirements of the application

Package Compatibility:

Primary package: 8-DFN-EP (3x3) or equivalent 8-PowerVDFN footprint
Alternative packages acceptable if PCB layout accommodates physical dimensions

The five substitute parts listed below satisfy all mandatory matching parameters and provide equivalent or superior electrical performance within the specified operating conditions.

Parameter Comparison

Parameter	AON7403	AONR21321	DMG7401SFG-7	DMP3008SFGQ-13	PJQ4403P_R2_00001	RQ3E075ATTB
Manufacturer	Alpha & Omega	Alpha & Omega	Diodes Inc.	Diodes Inc.	Panjit Int'l	Rohm Semi.
Product Status	Obsolete	Active	Active	Active	Active	Active
FET Type	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel
Vdss (V)	30	30	30	30	30	30
Id @ 25°C (A)	11 (Ta), 29 (Tc)	24 (Tc)	9.8 (Ta)	8.6 (Ta)	9.8 (Ta), 35 (Tc)	18 (Tc)
Rds On (Max) (mOhm)	18 @ 8A, 10V	16.5 @ 12A, 10V	11 @ 12A, 20V	17 @ 10A, 10V	15.5 @ 10A, 10V	23 @ 7.5A, 10V
Vgs(th) (Max) (V)	3 @ 250µA	2.3 @ 250µA	3 @ 250µA	2.1 @ 250µA	2.5 @ 250µA	2.5 @ 1mA
Qg (Max) (nC)	24 @ 15V	34 @ 10V	58 @ 10V	47 @ 10V	15 @ 4.5V	10.4 @ 4.5V
Ciss (Max) (pF)	1400 @ 15V	1180 @ 15V	2987 @ 15V	2230 @ 15V	1730 @ 15V	930 @ 15V
Power Dissipation (W)	3.1 (Ta), 25 (Tc)	4.1 (Ta), 24 (Tc)	0.94 (Ta)	0.9 (Ta)	2 (Ta), 30 (Tc)	15 (Tc)
Operating Temp (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-DFN-EP (3x3)	8-DFN-EP (3x3)	PowerDI3333-8	PowerDI3333-8	DFN3333-8	8-HSMT (3.2x3)
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
MSL	1	1	1	1	1	1

Engineering Selection Recommendations

AONR21321 (Alpha & Omega Semiconductor Inc.)

The AONR21321 is the manufacturer-recommended substitute from Alpha & Omega Semiconductor Inc., the original AON7403 manufacturer. This part maintains the same 8-DFN-EP (3x3) package footprint, ensuring direct PCB compatibility. The AONR21321 offers superior continuous drain current (24A Tc) and lower Rds On (16.5 mOhm @ 12A, 10V) compared to the AON7403. Active product status and ROHS3 compliance ensure long-term availability. This substitute is optimal for applications requiring minimal design modification.

PJQ4403P_R2_00001 (Panjit International Inc.)

The PJQ4403P_R2_00001 provides the highest continuous drain current rating (35A Tc) and the lowest gate charge (15 nC @ 4.5V) among all substitutes, enabling faster switching performance. The DFN3333-8 package is footprint-compatible with the 8-PowerVDFN family. Active product status and ROHS3 compliance support production continuity. This substitute is suitable for applications prioritizing high current handling and switching speed.

RQ3E075ATTB (Rohm Semiconductor)

The RQ3E075ATTB delivers the lowest input capacitance (930 pF @ 15V) and gate charge (10.4 nC @ 4.5V), minimizing gate drive power requirements. The 8-HSMT (3.2x3) package requires PCB layout verification for physical fit. Active product status and ROHS3 compliance ensure availability. This substitute is appropriate for gate-drive-limited applications.

DMG7401SFG-7 (Diodes Incorporated)

The DMG7401SFG-7 offers the lowest Rds On (11 mOhm @ 12A, 20V) among all substitutes, reducing conduction losses. The PowerDI3333-8 package is compatible with 8-PowerVDFN footprints. Active product status and ROHS3 compliance support long-term supply. This substitute is optimal for applications requiring minimal on-resistance and reduced heat dissipation.

DMP3008SFGQ-13 (Diodes Incorporated)

The DMP3008SFGQ-13 provides balanced electrical performance with Rds On of 17 mOhm @ 10A, 10V and moderate gate charge (47 nC @ 10V). The PowerDI3333-8 package is footprint-compatible. Active product status and ROHS3 compliance ensure availability. This substitute is suitable for general-purpose switching applications.

All five substitutes are active products with ROHS3 compliance and MSL Level 1 rating, supporting both new production and field replacement scenarios.

Frequently Asked Questions (FAQ)

Q: Can the AON7403 be directly replaced with any of these substitutes without PCB modification?

A: The AONR21321 provides direct PCB compatibility due to identical 8-DFN-EP (3x3) packaging. The PJQ4403P_R2_00001 uses DFN3333-8 packaging, which is footprint-compatible with 8-PowerVDFN. The DMG7401SFG-7 and DMP3008SFGQ-13 use PowerDI3333-8 packaging, also compatible with 8-PowerVDFN footprints. The RQ3E075ATTB uses 8-HSMT (3.2x3) packaging and requires PCB layout verification for physical fit. Verify PCB pad dimensions and spacing before substitution.

Q: What is the primary reason for substituting the AON7403?

A: The AON7403 is classified as obsolete. Substitution is necessary to ensure component availability for new production runs and field replacements. All listed substitutes are active products from established manufacturers.

Q: Which substitute offers the best thermal performance?

A: The PJQ4403P_R2_00001 provides the highest power dissipation rating (30W Tc), followed by the AONR21321 (24W Tc). Both support demanding thermal applications. The DMG7401SFG-7 and DMP3008SFGQ-13 are limited to 0.94W and 0.9W (Ta) respectively and are suitable only for lower-power applications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All five substitute parts are ROHS3 compliant with MSL Level 1 rating, meeting environmental and moisture sensitivity requirements equivalent to the AON7403.

Q: Which substitute has the lowest on-resistance?

A: The DMG7401SFG-7 has the lowest Rds On at 11 mOhm @ 12A, 20V. This reduces conduction losses and heat generation in high-current applications.

Q: Which substitute requires the least gate drive power?

A: The RQ3E075ATTB has the lowest gate charge (10.4 nC @ 4.5V) and input capacitance (930 pF @ 15V), minimizing gate drive power requirements. The PJQ4403P_R2_00001 is also efficient with 15 nC gate charge @ 4.5V.

Q: Can I use a substitute with lower continuous drain current than the AON7403?

A: No. The DMG7401SFG-7 (9.8A Ta) and DMP3008SFGQ-13 (8.6A Ta) have lower continuous drain current ratings than the AON7403 (11A Ta). These substitutes are suitable only if your application requires less than 8.6A continuous current.

Q: What is the difference between Ta and Tc current ratings?

A: Ta (ambient temperature) ratings assume operation at 25°C ambient with natural convection cooling. Tc (case temperature) ratings assume operation at 25°C case temperature with enhanced thermal management. Tc ratings are typically higher and represent maximum performance under optimal thermal conditions.

Q: Are there any gate voltage differences between the AON7403 and substitutes?

A: The AON7403 and most substitutes support ±25V maximum gate voltage. The DMP3008SFGQ-13 and PJQ4403P_R2_00001 are limited to ±20V. Verify gate drive voltage compatibility with your circuit design.

Q: Which substitute is the manufacturer-recommended option?

A: The AONR21321 is the manufacturer-recommended substitute from Alpha & Omega Semiconductor Inc., the original AON7403 manufacturer. It provides the closest electrical and mechanical compatibility.

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