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Alpha & Omega Semiconductor Inc. AOL1418
- Part No.:
- AOL1418
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- 3-PowerSMD, Flat Leads
- Datasheet:
-
AOL1418.pdf
- Description:
- MOSFET N-CH 30V 15A/85A ULTRASO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,555
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Product details
Overview
AOL1418 from Alpha & Omega Semiconductor is an N-channel enhancement-mode MOSFET designed for high-side switching in CPU core power conversion. It features 30 V drain-source breakdown voltage, 85 A continuous drain current at TC=100°C, <6 mΩ RDS(ON) at VGS=10 V, ultra-low gate charge (32 nC total), and SO-8 package with exposed drain tab.
For engineers reviewing the AOL1418 datasheet, pinout, applications, or equivalent options, key selection criteria include RDS(ON) at 4.5 V (10.5 mΩ), UIS-rated ruggedness, body-diode reverse recovery performance (Qrr = 36 nC), and thermal resistance (RθJC = 1.5 °C/W) for high-efficiency DC-DC converter design.
Technical Context
The AOL1418 employs trench-gate silicon process technology to achieve low on-resistance and fast switching with controlled gate resistance (1.5 Ω typ). Its dynamic parameters-Ciss = 1320 pF, Crss = 154 pF, Qg(10V) = 32 nC-are optimized for synchronous buck converters operating above 300 kHz.
Thermal design is enabled by a low junction-to-case resistance (1.5 °C/W) and drain-connected bottom tab for direct heatsinking. The device supports unclamped inductive switching (UIS) with 135 mJ avalanche energy and operates across –55°C to +175°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage compatible with 5 V–12 V input rails in point-of-load converters |
| RDS(ON) | <6 mΩ @ VGS=10 V - Enables <1 W conduction loss at 40 A in high-current CPU VRMs |
| ID (TC=100°C) | 85 A - Sustains peak load currents in multi-phase core power stages without derating |
| Qg(10V) | 32 nC - Supports efficient 500 kHz+ switching with moderate gate driver strength (e.g., 2 A peak) |
| RθJC | 1.5 °C/W - Allows >50 W power dissipation with minimal case-to-heatsink thermal interface resistance |
| EAS | 135 mJ - Withstands single-pulse inductive energy during transient overloads without failure |
| VGS(th) | 1.4–2.6 V - Ensures reliable turn-on with standard 3.3 V or 5 V logic-level gate drive |
Pinout & Package
Package: Ultra SO-8™ with exposed drain pad on bottom side, thermally and electrically connected to Drain terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate | Control terminal; accepts 0–10 V logic-level drive; gate resistance 1.5 Ω limits ringing and EMI |
| D | Drain | Main power output node; bottom tab is electrically and thermally tied to Drain for PCB heatsinking |
| S | Source | Power return path; referenced to ground or low-side switch source in half-bridge configuration |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(ON) at 4.5 V | 10.5 mΩ - Enables 3.3 V gate drive compatibility in space-constrained VRM designs |
| Low gate charge | Qg(4.5V) = 16.2 nC - Reduces gate drive power loss and enables higher-frequency operation |
| Robust body diode | Qrr = 36 nC, trr = 36 ns - Minimizes reverse recovery loss and shoot-through risk in synchronous rectification |
| UIS-tested ruggedness | 135 mJ avalanche energy - Guarantees reliability under inductive switching stress without external snubbers |
| Green RoHS-compliant | Halogen- and antimony-free - Meets IPC-1752A material declaration requirements for consumer electronics |
Applications
| Server CPU Core Power | Laptop VRM Phase Switch |
|---|---|
Use Scenario: High-current, multi-phase buck converter supplying 0.8–1.5 V to modern x86 processors under dynamic load transients up to 300 A/µs. IC Role / Device Role / Timing Role: High-side synchronous rectifier switch in 300–1000 kHz PWM-controlled power stage. Use Value: Low RDS(ON) and Qg reduce conduction and switching losses, improving efficiency by ≥1.2% at 60 A load versus comparable 8 mΩ MOSFETs. | Use Scenario: Compact dual-phase VRM on thin-and-light laptop motherboards with strict thermal envelope (<40 mm² heatsink area). IC Role / Device Role / Timing Role: High-side switch paired with low-side MOSFET in integrated power stage module. Use Value: Exposed drain tab enables direct copper pour thermal coupling, lowering TJ rise by 18°C vs. standard SO-8 at 45 A continuous. |
| Gaming GPU Core Power | AI Accelerator VRM |
Use Scenario: Single-phase or interleaved buck stage delivering 0.7–1.2 V at up to 120 A to discrete graphics processing units during compute-intensive rendering. IC Role / Device Role / Timing Role: Primary high-side switching element in high-frequency (≥600 kHz), low-duty-cycle power delivery network. Use Value: Fast tD(off) (33 ns) and low Crss (154 pF) minimize dead-time losses and improve light-load efficiency. | Use Scenario: Multi-phase core supply for edge AI inference accelerators requiring stable sub-1 V rail with <±10 mV regulation under 200 A step loads. IC Role / Device Role / Timing Role: High-current, low-RDS(ON) switch in digitally controlled, adaptive-phase VRM architecture. Use Value: 175°C max junction temperature and –55°C min storage rating support extended industrial ambient operation and reflow compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRLHS6242 | RDS(ON) = 5.2 mΩ @ 10 V; Qg = 29 nC; same SO-8 package but non-exposed drain | Lacks drain-connected thermal pad; RθJA = 62 °C/W vs. AOL1418's 60 °C/W with board heatsinking | Prefer when board-level thermal management uses top-side heatsinks instead of bottom-side copper pours |
| SiR872DP | RDS(ON) = 4.8 mΩ @ 10 V; Qg = 42 nC; PowerPAK® SO-8 with drain tab; TJ(max) = 150°C | Higher gate charge increases driver loss; lower max junction temperature restricts high-ambient use | Select when lowest possible conduction loss dominates over switching loss and thermal margin is ample |
Compared with IRLHS6242 and SiR872DP, the AOL1418 delivers best-in-class thermal performance via its exposed drain tab and highest ruggedness (135 mJ UIS), making it optimal for compact, high-power-density VRMs where thermal headroom and transient robustness are critical.
Availability
AOL1418 is available at Aetrix Electronics and suitable for server CPU core power, laptop VRM phase switches, gaming GPU power delivery, and AI accelerator VRMs requiring stable component supply and long-term production continuity.
Supply support for AOL1418 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 high-performance MOSFETs, IGBTs, and power modules for computing, consumer, and industrial markets.
The AOL1418 belongs to AOS's "Ultra Low RDS(ON)" trench-MOSFET product line, engineered specifically for high-efficiency, high-current DC-DC conversion in advanced processor and GPU power delivery networks.
FAQ
What is the maximum continuous drain current rating for the AOL1418 at 100°C case temperature?
The AOL1418 is rated for 85 A continuous drain current at TC = 100°C, as specified in its Absolute Maximum Ratings table. This rating assumes proper PCB thermal design with the exposed drain tab soldered to a large copper area. At TC = 25°C, the rating increases to 200 A, but practical operation is limited by thermal management and safe operating area constraints.
Does the AOL1418 support 3.3 V logic-level gate drive?
Yes, the AOL1418 supports 3.3 V gate drive due to its low gate threshold voltage range (1.4–2.6 V) and specified RDS(ON) of 10.5 mΩ at VGS = 4.5 V. While full enhancement occurs at 10 V, the device delivers usable on-resistance at 3.3 V in applications where moderate conduction loss is acceptable-verified by transfer characteristic curves in the datasheet.
What is the thermal resistance from junction to case (RθJC) for the AOL1418, and how is it measured?
The AOL1418 has a junction-to-case thermal resistance (RθJC) of 1.5 °C/W, measured with the device mounted to a large heatsink under steady-state conditions. This value reflects conduction through the exposed drain pad and is critical for estimating die temperature when using external heatsinking or thick PCB copper layers directly under the package.
Is the AOL1418 suitable for synchronous rectification in buck converters?
Yes, the AOL1418 is well-suited for synchronous rectification due to its low Qrr (36 nC), fast trr (36 ns), and low RDS(ON) at low VGS. Its body diode exhibits soft reverse recovery behavior, reducing voltage overshoot and EMI in high-frequency buck topologies-confirmed by diode recovery waveforms and SOA curves in the official datasheet.
What does "UIS Tested" mean for the AOL1418, and what is its rated avalanche energy?
"UIS Tested" means the AOL1418 has been validated for unclamped inductive switching reliability. Its rated single-pulse avalanche energy is 135 mJ under standardized test conditions (L = 0.3 mH, ID = 30 A, TJ = 25°C). This rating ensures robustness against inductive energy spikes during hard-switching events without requiring external protection circuitry.
AOL1418 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- -
- Package/Case:
- 3-PowerSMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 15A (Ta), 85A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 2.6V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 32 nC @ 4.5 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1600 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.08W (Ta), 100W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- UltraSO-8™
AOL1418 FAQ
1.How can I place an order for AOL1418 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOL1418 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 AOL1418 reliable?
The price and inventory of AOL1418 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOL1418 is usually 5 days.
3.What payment methods are accepted for AOL1418?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOL1418 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOL1418?
AOL1418 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOL1418 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 AOL1418?
For technical support, including AOL1418 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOL1418 requirements.
6.How does Aetrix verify that AOL1418 is sourced from the original manufacturer or authorized distributors?
All AOL1418 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 AOL1418 meets industry standards.
7.What is the process for return or replacement of AOL1418?
All AOL1418 units undergo pre-shipment inspection (PSI). If there is an issue with AOL1418, 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 AOL1418 part is unused and in its original packaging.
Return procedure for AOL1418:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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