Alpha & Omega Semiconductor Inc. AOT410L

Overview

AOT410L from Alpha & Omega Semiconductor is a 100V, 150A N-Channel MOSFET in TO-220 package, fabricated with SDMOSTM trench technology. It delivers <6.5mΩ R_DS(ON) at V_GS=10V, 100% UIS-tested, and supports high-current PWM switching in DC-DC converters and motor drives.

For engineers reviewing the AOT410L datasheet, pinout, applications, or equivalent options, key selection criteria include its 0.35°C/W junction-to-case thermal resistance, 129nC total gate charge, 177nC reverse recovery charge, and validated avalanche energy rating for rugged power stage design.

Technical Context

The AOT410L employs SDMOSTM trench gate process to simultaneously minimize R_DS(ON) and gate charge (Q_g=129nC max), enabling high-efficiency synchronous rectification and hard-switched topologies. Its low Q_rr (230nC max) and soft-recovery body diode support ZVS-capable designs.

Rated for 175°C maximum junction temperature, it features 100% production-tested unclamped inductive switching (UIS) and gate resistance (R_g=1Ω max), ensuring robustness in overcurrent and transient conditions without derating.

Key Specifications

Pinout & Package

TO-220 package with isolated tab (drain-connected), standard through-hole mounting, and 1000-unit tube packaging. Thermal pad electrically tied to drain.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-Channel MOSFET applications.

Compared with STP150N10F7 and IRFB4110PBF, the AOT410L uniquely combines 100% UIS validation, 0.35°C/W R_θJC, and soft-recovery diode-making it optimal for high-reliability industrial inverters where fault tolerance and thermal density are co-critical.

Availability

AOT410L is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, and solar microinverters requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for AOT410L 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 ICs for computing, industrial, and automotive markets.

The AOT410L belongs to AOS's SDMOSTM trench MOSFET product line, engineered specifically for high-current, high-efficiency power conversion in space- and thermally-constrained applications such as server PSUs and motor drives.

FAQ

What is the maximum continuous drain current rating for the AOT410L at 100°C case temperature?

The AOT410L supports 108A continuous drain current at T_C = 100°C, as specified in the Absolute Maximum Ratings table. This rating is derived from its 0.35°C/W junction-to-case thermal resistance and 175°C maximum junction temperature, enabling sustained operation in high-ambient industrial environments without forced airflow.

Does the AOT410L have an isolated drain tab, and how does that affect PCB layout?

Yes, the AOT410L in TO-220 package has an electrically isolated drain tab, allowing direct mechanical attachment to a heatsink without requiring insulating hardware. This simplifies thermal design and eliminates creepage/clearance concerns on the PCB, as the drain connection remains internal to the package and does not require copper isolation on the board layer beneath the device.

What is the typical gate threshold voltage range for the AOT410L, and how does it impact gate drive design?

The AOT410L has a gate threshold voltage (V_GS(th)) range of 2–4V at I_D = 250mA. This ensures reliable turn-on with standard 5V logic-level drivers while maintaining noise immunity. For full enhancement, however, V_GS ≥10V is required to achieve the specified <6.5mΩ R_DS(ON), so gate drive must deliver stable 10–12V with sufficient peak current to charge 129nC Q_g rapidly.

How is the AOT410L's body diode performance characterized, and why does it matter in synchronous rectification?

The AOT410L's body diode exhibits t_rr = 19–35ns and Q_rr = 124–230nC, with soft recovery confirmed by S ≥1.5. In synchronous rectification, this minimizes voltage spikes and EMI during commutation, reduces switching losses in high-frequency converters, and avoids shoot-through risk during dead-time transitions-directly improving system efficiency and reliability.

Is the AOT410L suitable for paralleling, and what factory testing supports that use case?

Yes, the AOT410L is suitable for paralleling due to its 100% R_g testing and tight V_GS(th) distribution (2–4V). These controls ensure matched turn-on timing and current sharing across multiple devices. The SDMOSTM process also provides positive temperature coefficient for R_DS(ON), promoting inherent thermal stability during parallel operation without external current-sharing resistors.