Alpha & Omega Semiconductor Inc. AOY2610E

Overview

AOY2610E from Alpha & Omega Semiconductor is a 60V N-Channel enhancement-mode MOSFET using AlphaSGT™ trench power technology, rated for 46A continuous drain current at TC=25°C, with RDS(ON) < 9.5mΩ at VGS=10V and < 13.3mΩ at VGS=4.5V, and integrated HBM Class 2 ESD protection. It serves as a high-efficiency synchronous rectifier or primary-side switch in DC-DC converters.

For engineers reviewing the AOY2610E datasheet, pinout, applications, or equivalent options, key selection criteria include its low gate charge (Qg=14.5–25nC at 10V), fast switching (tr=3.5ns, tf=3ns), avalanche-rated ruggedness (EAS=43mJ), TO-251B package thermal performance (RθJC=2.1°C/W), and RoHS/halogen-free compliance.

Technical Context

This MOSFET employs AlphaSGT™ (Alpha Silicon Gate Technology) trench structure to achieve low RDS(ON) and low Qg simultaneously, enabling high-efficiency operation in hard-switched and synchronous rectification topologies. Its gate threshold voltage (1.4–2.4V) supports 4.5V logic-level drive, and body diode recovery (Qrr=65nC, trr=19ns) is optimized for reduced switching loss in flyback and LLC secondary-side applications.

The device is 100% UIS tested and features guaranteed gate resistance (Rg=0.6–2.0Ω), low output capacitance (Coss=300pF), and robust thermal design with junction-to-case resistance of 2.1°C/W - critical for thermally constrained board layouts where heatsinking is limited.

Key Specifications

Pinout & Package

AOY2610E is housed in a TO-251B (IPAK short lead) surface-mount package with gull-wing leads, optimized for automated assembly and thermal transfer via exposed drain pad. The package footprint matches industry-standard IPAK variants but uses shortened leads for improved mechanical stability and reduced parasitic inductance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP60NF06L and IRFZ44NPBF, AOY2610E provides superior high-frequency efficiency via lower Qg and RDS(ON), verified avalanche ruggedness, and integrated ESD protection - making it the preferred choice for space-constrained, high-reliability power conversion where thermal headroom and transient immunity are critical.

Availability

AOY2610E is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, PoE++ PSE interfaces, and automotive body control modules requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for AOY2610E 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, communications, and industrial markets.

The AOY2610E belongs to AOS' AlphaSGT™ N-channel MOSFET product line, engineered specifically for high-efficiency, high-frequency power conversion in space- and thermal-constrained applications such as server power supplies and PoE infrastructure.

FAQ

What is the maximum continuous drain current rating for AOY2610E at TC=100°C?

The AOY2610E supports 36.5A continuous drain current at TC=100°C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limits of the TO-251B package and ensures safe operation when mounted on PCBs with moderate heatsinking. Designers must verify junction temperature rise using RθJC=2.1°C/W and ambient or case temperature constraints before finalizing layout for AOY2610E.

Does AOY2610E support 4.5V logic-level gate drive?

Yes, AOY2610E is fully compatible with 4.5V gate drive: its RDS(ON) is guaranteed <13.3mΩ at VGS=4.5V, and gate threshold voltage (VGS(th)) ranges from 1.4V to 2.4V - ensuring strong enhancement-mode turn-on with standard 3.3V or 5V PWM controllers. This eliminates need for gate drivers in many low-voltage SMPS applications using AOY2610E.

Is AOY2610E suitable for synchronous rectification in LLC resonant converters?

Yes, AOY2610E is well-suited for synchronous rectification in LLC resonant converters due to its low Qrr (65nC), fast trr (19ns), and low VSD (0.72V). These parameters directly reduce reverse recovery loss and improve light-load efficiency. The device's low RDS(ON) also minimizes conduction loss during high-current conduction phases - a key advantage confirmed in AOY2610E application notes for high-frequency AC/DC adapters.

What is the thermal resistance from junction to ambient (RθJA) for AOY2610E in standard PCB mounting?

The AOY2610E exhibits RθJA = 50°C/W when mounted on a 1in² FR-4 board with 2oz copper in still air (per datasheet Note H). This value assumes minimal copper area beyond the pad; actual RθJA will improve with larger thermal pads or internal planes. For thermal design, use RθJC = 2.1°C/W when heatsinking is applied - the more accurate metric for AOY2610E in power-dense layouts.

Does AOY2610E have built-in ESD protection, and what class is it rated for?

Yes, AOY2610E includes integrated HBM (Human Body Model) ESD protection rated at Class 2 (≥2kV), as explicitly stated in the Product Summary and Electrical Characteristics tables. This eliminates need for external TVS diodes in most board-level ESD scenarios and improves first-pass yield during automated assembly - a verified feature across all AOD2610E/AOI2610E/AOY2610E variants.