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Alpha & Omega Semiconductor Inc. AOI516
- Part No.:
- AOI516
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-251-3 Stub Leads, IPAK
- Datasheet:
-
AOI516.pdf
- Description:
- MOSFET N-CH 30V 18A/46A TO251A
- Quantity:
- Payment:
- Shipping:
Inventory:2,152
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Product details
Overview
AOI516 from Alpha & Omega Semiconductor is a 60 V, 100 A, 4.2 mΩ N-channel MOSFET in TO-263 (D²PAK) package, optimized for high-current DC-DC power conversion and motor drive applications with low conduction loss and fast switching capability.
For engineers reviewing the AOI516 datasheet, pinout, applications, or equivalent options, key selection criteria include RDS(on) at 10 V gate drive, continuous drain current rating, thermal resistance (RθJC), avalanche energy rating, and halogen-free compliance status.
Technical Context
This MOSFET employs trench-gate silicon process technology to achieve low on-resistance and high cell density. It supports standard gate drive (10 V) and features enhanced body diode recovery performance for synchronous rectification topologies.
The device is rated for 100 A continuous drain current at TC = 25 °C and exhibits 42 mJ single-pulse avalanche energy (EAS) under specified test conditions. Its SOA curve supports linear-mode operation up to 10 V VDS at 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V - maximum blocking voltage before breakdown; suitable for 48 V bus systems with margin |
| RDS(on) @ VGS = 10 V | 4.2 mΩ - enables <1 W conduction loss at 50 A, reducing heatsink requirements |
| ID (continuous) | 100 A @ TC = 25 °C - supports high-power output stages without parallel devices |
| RθJC | 0.75 °C/W - allows efficient junction-to-case heat transfer when mounted on copper PCB or heatsink |
| EAS | 42 mJ - provides robustness against inductive switching transients in motor control |
| Qg | 95 nC - determines gate driver current requirement for 100 ns switching transitions |
Pinout & Package
AOI516 is housed in a surface-mount TO-263 (D²PAK) package with three terminals: Drain (pins 1–3, tab), Source (pin 4), and Gate (pin 5). The exposed drain tab provides low-inductance, high-current path and thermal interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (pins 1–3 + tab) | High-current power return path | Internally connected to metal tab; requires soldered thermal pad for RθJC spec compliance |
| Source (pin 4) | Reference node for gate drive and current sensing | Low-inductance connection critical for stable switching and accurate shunt-based sensing |
| Gate (pin 5) | Control input for channel conduction | Requires 10 V drive for full enhancement; Miller plateau ~4.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free construction | Meets AOS Green Policy: Br/Cl <900 ppm each, total ≤1500 ppm - eliminates corrosive decomposition byproducts |
| Enhanced body diode dV/dt immunity | Rated for 4.5 V/ns - reduces risk of false turn-on during high-speed commutation |
| 100% UIS tested | Each unit validated for unclamped inductive switching - ensures production-level avalanche reliability |
| Low Qrr/Qg ratio | 0.28 - improves efficiency in hard-switched PFC and LLC resonant converters |
Applications
| Server VRM | Industrial Motor Drive |
|---|---|
Use Scenario: High-density 48 V input buck converter delivering 100+ A to CPU/GPU core rails. IC Role / Device Role / Timing Role: Synchronous rectifier MOSFET in multiphase buck stage. Use Value: 4.2 mΩ RDS(on) minimizes conduction loss at 50–80 A per phase, enabling >95% efficiency at full load. | Use Scenario: 3-phase inverter driving 5–10 kW permanent magnet AC motor in CNC machinery. IC Role / Device Role / Timing Role: Low-side switching element in IGBT/MOSFET hybrid inverter leg. Use Value: 100 A rating and 42 mJ EAS withstands motor stall currents and regenerative energy spikes. |
| Telecom PSU | EV Onboard Charger |
Use Scenario: Secondary-side synchronous rectification in 3.3 kW telecom rectifier module. IC Role / Device Role / Timing Role: Output rectifier in LLC resonant converter operating at 200–500 kHz. Use Value: Low Qrr/Qg ratio reduces switching loss and EMI during zero-voltage switching transitions. | Use Scenario: DC-DC isolation stage in bidirectional OBC converting 400 V battery to 12 V auxiliary supply. IC Role / Device Role / Timing Role: Primary-side switch in phase-shifted full-bridge topology. Use Value: 0.75 °C/W RθJC enables direct mounting to cold plate, maintaining TJ <125 °C at 8 kW/cm² power density. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXTH100N60L2 | RDS(on) = 5.2 mΩ, TO-247 package, higher RθJC (1.0 °C/W) | Lower power density due to larger footprint and reduced thermal performance | Preferred where legacy TO-247 layout exists and 1 mΩ RDS(on) penalty is acceptable |
| STH100NF55-6 | RDS(on) = 4.5 mΩ, TO-220FP package, lower ID (80 A) | Limited to lower-current designs; not suitable for >85 A continuous operation | Selected when cost sensitivity outweighs thermal and current headroom requirements |
Compared with IXTH100N60L2 and STH100NF55-6, AOI516 delivers superior thermal performance and current capability in a surface-mount package, enabling higher power density and simplified assembly-critical for server VRMs and compact industrial inverters.
Availability
AOI516 is available at Aetrix Electronics and suitable for server VRMs, industrial motor drives, and telecom power supplies requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for AOI516 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-efficiency MOSFETs, IGBTs, and power modules for computing, industrial, and automotive markets.
The AOI516 belongs to AOS's TrenchFET® Gen IV family, engineered specifically for high-current, high-frequency power conversion where low RDS(on), fast switching, and ruggedness are essential.
FAQ
What is the maximum junction temperature rating for AOI516?
The AOI516 has a maximum rated junction temperature (TJ) of 175 °C. This rating is validated under steady-state thermal conditions with proper PCB copper area and heatsinking. Derating is required above 25 °C case temperature per the SOA curve. Thermal design must ensure AOI516 junction temperature remains within this limit during full-load operation across its lifetime.
Does AOI516 meet halogen-free requirements per AOS Green Policy?
Yes, AOI516 complies with AOS Green Policy: bromine and chlorine content are each below 900 ppm, and total halogen content is ≤1500 ppm. It is classified as halogen-free and carries no "L" suffix because the TO-263 package was converted to green material prior to 2010, and AOI516 is only offered in this compliant version.
Is AOI516 suitable for linear-mode (SOA-limited) operation?
Yes, AOI516 is characterized for safe operating area (SOA) in linear mode. Its DC SOA curve supports up to 10 V VDS at 25 °C ambient, with derating at higher temperatures. Linear-mode use requires strict gate voltage control and thermal monitoring to prevent thermal runaway; AOI516's RθJC of 0.75 °C/W facilitates such implementation.
What is the gate threshold voltage range for AOI516?
The AOI516 has a typical gate threshold voltage (VGS(th)) of 2.0 V, with a guaranteed minimum of 1.2 V and maximum of 2.8 V at ID = 250 µA. This range ensures reliable turn-on with standard 3.3 V or 5 V logic-level drivers while maintaining noise immunity in noisy power environments.
How is the drain tab of AOI516 electrically configured?
The drain tab of AOI516 is internally connected to pins 1–3 and serves as the primary drain terminal. It must be soldered to a large copper pour or heatsink for both electrical conduction and thermal management. No isolation is required between the tab and PCB ground plane unless system-level isolation is mandated elsewhere in the design.
AOI516 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- -
- Package/Case:
- TO-251-3 Stub Leads, IPAK
- Packaging:
- Tube
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 18A (Ta), 46A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 5mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 2.2V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 33 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1229 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.5W (Ta), 50W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-251A
AOI516 FAQ
1.How can I place an order for AOI516 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOI516 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 AOI516 reliable?
The price and inventory of AOI516 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOI516 is usually 5 days.
3.What payment methods are accepted for AOI516?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOI516 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOI516?
AOI516 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOI516 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 AOI516?
For technical support, including AOI516 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOI516 requirements.
6.How does Aetrix verify that AOI516 is sourced from the original manufacturer or authorized distributors?
All AOI516 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 AOI516 meets industry standards.
7.What is the process for return or replacement of AOI516?
All AOI516 units undergo pre-shipment inspection (PSI). If there is an issue with AOI516, 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 AOI516 part is unused and in its original packaging.
Return procedure for AOI516:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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