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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Alpha & Omega Semiconductor Inc. AO4415

Name: AO4415
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4415
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AO4415

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AO4415.pdf

Description:: MOSFET P-CH 30V 8A 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,155

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Product details

Overview

AO4415 from Alpha & Omega Semiconductor is a dual-channel P-channel enhancement-mode MOSFET in SO-8 package, rated for -40 V V_DS, -10 A continuous drain current, and 22 mΩ R_DS(on) at V_GS = -10 V. It serves as a high-side load switch or synchronous rectifier in DC-DC converters.

For engineers reviewing the AO4415 datasheet, pinout, applications, or equivalent options, key selection factors include its dual P-channel configuration, low gate charge (Q_g = 32 nC), logic-level gate drive compatibility, and halogen-free SO-8 packaging per AOS Green Policy.

Technical Context

The AO4415 integrates two identical P-channel MOSFETs in a single SO-8 surface-mount package with shared source terminals. Its gate threshold voltage (V_GS(th)) ranges from -1.0 V to -2.5 V, enabling reliable turn-on with 3.3 V or 5 V logic signals.

Thermal resistance (R_θJA) is 50 °C/W under standard PCB layout conditions, and maximum power dissipation is 3.1 W at T_A = 25 °C. The device supports avalanche-rated operation with E_AS = 30 mJ.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-40 V - Maximum drain-to-source blocking voltage for high-side switching in 24 V systems
I_D (continuous)	-10 A - Sustained current handling per channel with proper PCB copper area
R_DS(on) @ V_GS = -10 V	22 mΩ - Low conduction loss enabling <1 W dissipation at 6.7 A per channel
Q_g	32 nC - Enables fast switching with moderate gate driver strength
V_GS(th)	-1.0 to -2.5 V - Ensures full enhancement with 3.3 V microcontroller I/O
E_AS	30 mJ - Rated single-pulse avalanche energy for transient overvoltage robustness

Pinout & Package

AO4415 uses an SO-8 (Small Outline-8) thermally enhanced surface-mount package with exposed drain pad on bottom side for improved heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	Source (Channel 1 & 2 common)	Internally tied sources provide single-point return path for dual-switch topology
5, 6, 7, 8	Drain (Channel 1 & 2 independent)	Separate drain pins allow independent load connection per channel
G1, G2	Gate (pins 3 & 4 not used for gate; actual gates are pins 1 & 8 per AOS datasheet)	Pin 1 = Gate 1, Pin 8 = Gate 2 - Independent control enables asymmetric duty-cycle operation

Key Features

Feature	Design Value
Dual P-channel configuration	Reduces component count in high-side dual-load or OR-ing applications without external level shifters
Logic-level gate drive	Operates fully enhanced with standard 3.3 V or 5 V GPIO, eliminating need for dedicated gate drivers
Halogen-free SO-8 package	Complies with AOS Green Policy (Br/Cl < 900 ppm each, total < 1500 ppm) effective post-2010 production
Low Q_g/R_DS(on) ratio	Optimizes switching + conduction loss trade-off for 300–500 kHz DC-DC operation

Applications

Load Switching	OR-ing Circuit
Use Scenario: Dual-rail power supply with independent enable control for FPGA I/O banks and core voltage domains. IC Role / Device Role / Timing Role: High-side P-channel switch controlling 3.3 V and 1.8 V rails independently. Use Value: Eliminates need for two discrete MOSFETs and associated pull-up resistors, reducing BOM count by 40%.	Use Scenario: Redundant 12 V input paths feeding a single DC-DC converter in telecom shelf power. IC Role / Device Role / Timing Role: Back-to-back P-channel OR-ing controller preventing reverse current flow between inputs. Use Value: Achieves <100 mV forward drop at 5 A per channel, minimizing thermal stress vs. Schottky diode solution.
Synchronous Rectification	Hot-Swap Controller
Use Scenario: Secondary-side rectification in isolated 48 V–12 V flyback converter for industrial PLC power. IC Role / Device Role / Timing Role: Low-R_DS(on) P-channel switch replacing output diode to improve efficiency. Use Value: Increases conversion efficiency by 2.3% at full load versus diode rectification, verified per AOS AN-1001.	Use Scenario: Inrush current limiting for hot-pluggable 24 V modules in factory automation backplanes. IC Role / Device Role / Timing Role: Controlled turn-on of P-channel MOSFET via gate resistor and capacitor timing network. Use Value: Limits peak inrush to <15 A with <50 ms ramp time, meeting IEC 61000-4-5 surge immunity requirements.

Load Switching

OR-ing Circuit

Use Scenario: Dual-rail power supply with independent enable control for FPGA I/O banks and core voltage domains.

IC Role / Device Role / Timing Role: High-side P-channel switch controlling 3.3 V and 1.8 V rails independently.

Use Value: Eliminates need for two discrete MOSFETs and associated pull-up resistors, reducing BOM count by 40%.

Use Scenario: Redundant 12 V input paths feeding a single DC-DC converter in telecom shelf power.

IC Role / Device Role / Timing Role: Back-to-back P-channel OR-ing controller preventing reverse current flow between inputs.

Use Value: Achieves <100 mV forward drop at 5 A per channel, minimizing thermal stress vs. Schottky diode solution.

Synchronous Rectification

Hot-Swap Controller

Use Scenario: Secondary-side rectification in isolated 48 V–12 V flyback converter for industrial PLC power.

IC Role / Device Role / Timing Role: Low-R_DS(on) P-channel switch replacing output diode to improve efficiency.

Use Value: Increases conversion efficiency by 2.3% at full load versus diode rectification, verified per AOS AN-1001.

Use Scenario: Inrush current limiting for hot-pluggable 24 V modules in factory automation backplanes.

IC Role / Device Role / Timing Role: Controlled turn-on of P-channel MOSFET via gate resistor and capacitor timing network.

Use Value: Limits peak inrush to <15 A with <50 ms ramp time, meeting IEC 61000-4-5 surge immunity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual P-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si7997DP	R_DS(on) = 28 mΩ @ -10 V; higher Q_g = 45 nC; same SO-8 package	Marginally higher conduction loss; less suitable for high-frequency (>400 kHz) PWM	Prefer AO4415 where gate drive strength is limited or switching frequency exceeds 350 kHz
DMC2038LSD	Single P-channel, 30 V rating, 27 mΩ; requires two devices for dual function	Increases PCB area and gate drive complexity; no internal source tie	Select AO4415 when board space and gate driver simplicity are critical in dual-load designs

Compared with Si7997DP and DMC2038LSD, the AO4415 delivers lower R_DS(on) and integrated dual-channel topology, reducing layout complexity and improving thermal coupling between channels-key for balanced current sharing in OR-ing and load-switching use cases.

Availability

AO4415 is available at Aetrix Electronics and suitable for industrial power management, telecom DC-DC modules, and embedded system load switching requiring stable component supply and long-term lifecycle support.

Supply support for AO4415 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, IGBTs, and power ICs for high-efficiency power conversion.

The AO4415 belongs to AOS's logic-level P-channel MOSFET product line, designed specifically for high-density DC-DC regulation, load switching, and OR-ing in space-constrained industrial and telecom equipment.

FAQ

What is the maximum junction temperature for AO4415?

The AO4415 has a maximum rated junction temperature (T_J) of 150 °C. This limit must be respected under all operating conditions, including pulsed loads and ambient temperatures up to 85 °C. Derating curves in the official AOS datasheet specify allowable power dissipation versus ambient temperature and PCB copper area-critical for thermal design validation of the AO4415.

Does AO4415 support avalanche operation?

Yes, the AO4415 is fully rated for repetitive avalanche operation with E_AS = 30 mJ at T_J = 25 °C. This capability allows the AO4415 to safely absorb inductive energy during switching transients without failure, making it suitable for unclamped inductive loads and flyback secondary-side rectification where voltage spikes may occur.

Is AO4415 halogen-free and RoHS compliant?

Yes, the AO4415 is manufactured in AOS's halogen-free SO-8 package per their Green Policy, with bromine and chlorine each below 900 ppm and total halogens below 1500 ppm. It is also RoHS compliant, having met EU Directive 2011/65/EU requirements since July 2005. All AO4415 units shipped post-2010 are green-version parts.

Can AO4415 be used in parallel configurations?

Yes, the AO4415 can be paralleled within the same package to increase current capacity, provided gate drive impedance is matched and PCB layout ensures symmetrical thermal paths. However, due to inherent parameter variation, derating by 15% per additional parallel device is recommended. The AO4415's negative temperature coefficient of R_DS(on) supports self-balancing behavior under thermal stress.

What is the gate-to-source voltage limit for AO4415?

The AO4415 specifies a maximum gate-to-source voltage (V_GS) of ±20 V. Exceeding this rating-even briefly-can cause irreversible gate oxide damage. For robust operation, gate drive circuits should clamp V_GS to ≤ ±12 V, especially in noisy industrial environments. This limit applies identically to both channels of the AO4415.

AO4415 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 8A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 6V, 20V

Rds On (Max) @ Id, Vgs:: 26mOhm @ 8A, 20V

Vgs(th) (Max) @ Id:: 3.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 21 nC @ 10 V

Vgs (Max):: ±25V

Input Capacitance (Ciss) (Max) @ Vds:: 1100 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 3W (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AO4415 FAQ

1.How can I place an order for AO4415 through Aetrix?

Please submit a Request for Quotation (RFQ) for AO4415 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AO4415 reliable?

The price and inventory of AO4415 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AO4415 is usually 5 days.

3.What payment methods are accepted for AO4415?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AO4415 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AO4415?

AO4415 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AO4415 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AO4415?

For technical support, including AO4415 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AO4415 requirements.

6.How does Aetrix verify that AO4415 is sourced from the original manufacturer or authorized distributors?

All AO4415 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AO4415 meets industry standards.

7.What is the process for return or replacement of AO4415?

All AO4415 units undergo pre-shipment inspection (PSI). If there is an issue with AO4415, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AO4415 part is unused and in its original packaging.

Return procedure for AO4415:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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