AO4807 Equivalent & Substitute Parts

Part Overview

The AO4807 is a dual P-channel MOSFET array manufactured by Alpha & Omega Semiconductor Inc., designed for surface mount applications in 8-SOIC packaging. This component integrates two P-channel MOSFETs with a maximum drain-source voltage rating of 30V and continuous drain current capability of 6A at 25°C. The AO4807 is classified as "Not For New Designs," indicating that while functional units remain in inventory, Alpha & Omega Semiconductor Inc. has discontinued active development and support for this product line. Identification of equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where component replacement is required.

Substiute Parts

AO4807

Alpha & Omega Semiconductor Inc.In Stock: 26419AO4807 Datasheet

Current PartRFQ

AOSD21313C

Alpha & Omega Semiconductor Inc.In Stock: 4459AOSD21313C Datasheet

MFR RecommendedRFQ

DMP3056LSD-13

Diodes IncorporatedIn Stock: 89561DMP3056LSD-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AO4807 MOSFET array is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Dual P-channel configuration (2 P-Channel)
• Drain-source voltage rating of 30V or higher
• Continuous drain current capability of 6A or greater at 25°C
• On-resistance (Rds On) within acceptable operating margins
• Gate threshold voltage (Vgs(th)) compatibility for logic-level switching
• Operating temperature range spanning -55°C to 150°C

Mechanical Compatibility Criteria:

• Surface mount technology
• 8-pin SOIC package footprint (0.154", 3.90mm width)
• Moisture sensitivity level MSL 1 or equivalent

Regulatory & Compliance Criteria:

• ROHS3 compliance
• REACH unaffected status
• EAR99 export classification

The substitute parts identified below satisfy all electrical parameters within acceptable engineering tolerances and maintain full mechanical and regulatory compatibility with the AO4807.

Parameter Comparison

Engineering Selection Recommendations

AOSD21313C (Alpha & Omega Semiconductor Inc.)

The AOSD21313C is an active product from the same manufacturer as the AO4807, providing direct design continuity. This substitute maintains the 30V Vdss rating and 8-SOIC package compatibility. The continuous drain current specification of 5.7A is marginally lower than the AO4807's 6A rating; however, the on-resistance of 32 mOhm is superior, resulting in lower power dissipation. The gate threshold voltage of 2.2V is lower than the AO4807, improving logic-level gate drive efficiency. The increased gate charge of 33 nC and input capacitance of 1100 pF represent trade-offs in switching speed. Maximum power rating of 1.7W is lower than the AO4807's 2W specification. This substitute is suitable for applications where the 5.7A continuous current rating is sufficient and thermal management is not constrained. Full ROHS3 compliance and MSL 1 rating are maintained.

DMP3056LSD-13 (Diodes Incorporated)

The DMP3056LSD-13 is an active product from Diodes Incorporated, offering superior electrical performance in several parameters. The continuous drain current of 6.9A exceeds the AO4807's 6A specification, providing additional current headroom. The on-resistance of 45 mOhm is higher than the AO4807, resulting in increased power dissipation under full current conditions. The gate threshold voltage of 2.1V is lower, supporting efficient logic-level switching. The gate charge of 13.7 nC is lower than the AO4807, enabling faster switching transitions. Input capacitance of 722 pF is comparable to the AO4807. Maximum power rating of 2.5W exceeds the AO4807's 2W specification. The 8-SOIC package footprint is mechanically compatible. Full ROHS3 compliance and MSL 1 rating are maintained. This substitute is suitable for applications requiring higher current capacity and improved switching performance, with acceptance of higher on-resistance losses.

Both substitute parts maintain full regulatory compliance, identical operating temperature ranges, and compatible packaging. Selection between AOSD21313C and DMP3056LSD-13 depends on application-specific requirements for current capacity, on-resistance losses, and switching speed.

Frequently Asked Questions (FAQ)

Q: Can the AOSD21313C be used as a direct replacement for the AO4807 in all applications?

A: The AOSD21313C is electrically and mechanically compatible with the AO4807 in applications where the continuous drain current requirement does not exceed 5.7A. The lower on-resistance of 32 mOhm compared to the AO4807's 35 mOhm results in reduced power dissipation. Applications requiring the full 6A continuous current rating of the AO4807 should evaluate the DMP3056LSD-13 as an alternative.

Q: What is the significance of the gate charge difference between the AO4807 and DMP3056LSD-13?

A: Gate charge (Qg) determines the energy required to switch the MOSFET on and off. The DMP3056LSD-13 has a gate charge of 13.7 nC compared to the AO4807's 16 nC, resulting in faster switching transitions and lower gate drive power consumption. This parameter is critical in high-frequency switching applications.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. The AO4807, AOSD21313C, and DMP3056LSD-13 all use the 8-SOIC package with identical dimensions (0.154", 3.90mm width). All three parts are compatible with the same PCB footprint and can be substituted without layout modifications.

Q: What is the impact of the higher on-resistance in the DMP3056LSD-13?

A: The DMP3056LSD-13 has an on-resistance of 45 mOhm at 6A and 10V gate-source voltage, compared to the AO4807's 35 mOhm. At full current, this results in higher power dissipation (I²R losses). In applications with continuous high current operation, thermal management considerations may be necessary. The DMP3056LSD-13's higher maximum power rating of 2.5W provides additional thermal headroom compared to the AO4807's 2W specification.

Q: Are there packaging differences between the substitute parts?

A: The AO4807 and DMP3056LSD-13 are supplied in Tape & Reel (TR) packaging, while the AOSD21313C is available in Cut Tape (CT) and Digi-Reel® packaging. All three parts use the same 8-SOIC component package. Packaging format differences affect supply chain logistics but do not impact electrical or mechanical compatibility.

Q: Do all substitute parts meet the same regulatory requirements as the AO4807?

A: Yes. The AOSD21313C and DMP3056LSD-13 are both ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes, matching the AO4807's regulatory status. Both substitute parts have MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Which substitute part should be selected for new designs?

A: Both AOSD21313C and DMP3056LSD-13 are active products suitable for new designs. The AO4807 is classified as "Not For New Designs." Selection between the two active substitutes depends on application requirements: AOSD21313C for lower on-resistance and power dissipation; DMP3056LSD-13 for higher current capacity and faster switching performance.

Q: What is the operating temperature compatibility of the substitute parts?

A: All three parts—AO4807, AOSD21313C, and DMP3056LSD-13—operate across the identical temperature range of -55°C to 150°C (junction temperature). No thermal performance differences exist between the parts across this operating range.