AOD403L MOSFET P-Channel 30V Equivalent & Substitute Parts

Part Overview

The AOD403L is a P-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain current of 15A at Ta and 70A at Tc. The device is housed in a Surface Mount TO-252 (DPAK) package and is designed for general-purpose switching and amplification applications requiring P-channel enhancement-mode operation.

The AOD403L carries an Obsolete product status, indicating that the manufacturer has discontinued active production and support. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this component.

Substiute Parts

AOD403L

Alpha & Omega Semiconductor Inc.In Stock: 964AOD403L Datasheet

Current PartRFQ

AOD403

Alpha & Omega Semiconductor Inc.In Stock: 200135AOD403 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOD403L is determined by strict electrical and mechanical parameter matching within the P-Channel MOSFET category. The following parameters establish the substitution criteria:

Electrical Parameters (Critical for Functional Equivalence):

• FET Type: P-Channel
• Technology: MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): 30V
• Continuous Drain Current (Id): 15A (Ta), 70A (Tc)
• On-State Resistance (Rds On): 6 mOhm @ 20A, 20V
• Gate Threshold Voltage (Vgs(th)): 3.5V @ 250µA
• Gate Charge (Qg): 120 nC @ 10V
• Maximum Gate Voltage (Vgs): ±25V
• Input Capacitance (Ciss): 5300 pF @ 15V
• Power Dissipation: 2.5W (Ta), 90W (Tc)
• Operating Temperature Range: -55°C to 175°C (TJ)

Mechanical Parameters (Critical for Physical Compatibility):

• Mounting Type: Surface Mount
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63

Substitute parts must match all electrical parameters and the mechanical package specification to ensure direct replacement without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

AOD403 as Primary Substitute:

The AOD403 is the direct electrical and mechanical equivalent of the AOD403L. All critical electrical parameters—including Vdss, Id, Rds On, Vgs(th), Qg, Vgs, Ciss, and power dissipation—are identical. The package specification (TO-252-3, DPAK) and mounting type (Surface Mount) are identical, enabling direct PCB-level substitution without layout modification.

The AOD403 carries a "Not For New Designs" product status, indicating that while the manufacturer no longer recommends its use in new development, the part remains available for production and legacy system support. The AOD403 is ROHS3 Compliant, providing enhanced environmental and regulatory compliance compared to the AOD403L, for which RoHS status is not specified.

Compliance and Regulatory Considerations:

Both the AOD403L and AOD403 share identical REACH Status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.29.0095). The AOD403's ROHS3 Compliant status makes it suitable for applications requiring environmental compliance certification.

Inventory and Availability:

The AOD403 maintains significantly higher inventory availability (200,100 pieces) compared to the AOD403L (886 pieces), supporting sustained production requirements and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can the AOD403 directly replace the AOD403L without circuit modification?

A: Yes. The AOD403 and AOD403L are electrically and mechanically identical across all specified parameters. Direct substitution is possible without circuit redesign or PCB layout changes.

Q: What is the difference between the AOD403L and AOD403?

A: The primary differences are product status and packaging format. The AOD403L is Obsolete and supplied in standard packaging, while the AOD403 is marked "Not For New Designs" and supplied in Tape & Reel (TR) format. Electrically and mechanically, both devices are identical.

Q: Is the AOD403 suitable for new product designs?

A: The AOD403 carries a "Not For New Designs" status, indicating the manufacturer does not recommend its use in new development. However, it remains available for production support of existing systems and legacy applications.

Q: Does the AOD403 meet RoHS compliance requirements?

A: Yes. The AOD403 is ROHS3 Compliant. RoHS status for the AOD403L is not specified in the available documentation.

Q: Are there any differences in the TO-252 (DPAK) package between these parts?

A: No. Both the AOD403L and AOD403 use the identical TO-252-3 DPAK (2 Leads + Tab) SC-63 package specification. Pin configuration, lead spacing, and thermal characteristics are identical.

Q: What is the Moisture Sensitivity Level (MSL) for these devices?

A: Both the AOD403L and AOD403 have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can the AOD403 be used in high-temperature applications?

A: Yes. The AOD403 operates across the temperature range of -55°C to 175°C (TJ), supporting both industrial and high-temperature application requirements.

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

A: The continuous drain current is specified at two thermal conditions: 15A at Ta (ambient temperature) and 70A at Tc (case temperature). The higher Tc rating reflects improved thermal dissipation when the device case is actively cooled or mounted on a high-thermal-conductivity substrate.