Alpha & Omega Semiconductor Inc. AOD360A70

Overview

AOD360A70 from Alpha & Omega Semiconductor is a 700 V, 48 A N-channel MOSFET in TO-252 (DPAK) package, featuring 0.36 Ω max R_DS(ON), 22.5 nC typical gate charge, and optimized switching for flyback SMPS in PD adapters and lighting. It delivers robust unclamped inductive switching (UIS) and avalanche-rated operation up to 150 °C junction temperature.

For engineers reviewing the AOD360A70 datasheet, pinout, applications, or equivalent options, key selection criteria include its 700 V BVDSS rating, low R_DS(ON) at 10 V drive, body diode reverse recovery time of 310 ns, and thermal resistance of 0.9 °C/W junction-to-case - critical for high-voltage offline power supply design.

Technical Context

This MOSFET employs proprietary aMOS5™ technology to achieve low conduction loss and enhanced dv/dt ruggedness (138 V/ns), enabling stable operation in high-noise flyback converters. Its 100% UIS-tested and 100% R_g-tested qualification ensures reliability under repetitive avalanche stress and gate resistance consistency.

The device integrates an optimized body diode with 0.86–1.2 V forward voltage and 310 ns reverse recovery time, supporting efficient discontinuous conduction mode (DCM) operation. Dynamic parameters-including 1360 pF C_iss, 34 pF C_oss, and 1.7 pF C_rss-are characterized at V_DS = 5 V and support EMI-optimized layout and snubberless design.

Key Specifications

Pinout & Package

Package: TO-252 (DPAK), surface-mount, single-ended heat dissipation via exposed drain pad. Thermal resistance R_θJC = 0.9 °C/W enables direct PCB copper pour heatsinking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage MOSFET applications.

Compared with STP7NK70ZFP and IXTH30N70L2, the AOD360A70 provides optimal balance of 48 A current handling, 0.36 Ω R_DS(ON), and compact TO-252 packaging - making it uniquely suited for space-constrained, 45–75 W offline power supplies where thermal performance and gate drive simplicity are critical.

Availability

AOD360A70 is available at Aetrix Electronics and suitable for USB-C PD adapters, flyback SMPS, and LED lighting drivers requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AOD360A70 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 ICs for computing, consumer, and industrial markets.

The AOD360A70 belongs to AOS's aMOS5™ high-voltage MOSFET product line, engineered specifically for high-density, high-reliability offline AC/DC conversion in compact power adapters and lighting systems.

FAQ

What is the maximum continuous drain current rating for AOD360A70 at 100 °C case temperature?

The AOD360A70 supports 12 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derated value reflects thermal limits of the TO-252 package and ensures safe operation without exceeding 150 °C maximum junction temperature. The AOD360A70 must be mounted on adequate copper area to maintain this rating in real-world layouts.

Does AOD360A70 have a fully characterized body diode for synchronous rectification use?

No - the AOD360A70 body diode is enhanced for robustness and fast reverse recovery (t_rr = 310 ns), but it is not designed for synchronous rectification. Its V_SD = 0.86–1.2 V and Q_rr = 4.8 mC are optimized for flyback freewheeling, not low-loss bidirectional conduction. For synchronous rectification, discrete Schottky or dedicated SR controllers paired with logic-level MOSFETs are recommended instead of relying on the AOD360A70 body diode.

What is the gate threshold voltage range for AOD360A70, and how does it affect drive circuit design?

The AOD360A70 has a gate threshold voltage (V_GS(th)) range of 3.4–4.6 V at T_J = 25 °C. This tight distribution ensures consistent turn-on behavior across temperature and production lots. Drive circuits must supply ≥10 V to guarantee full enhancement and minimize R_DS(ON); using only 5 V risks partial turn-on and excessive conduction loss. The AOD360A70 is not a logic-level MOSFET and requires standard 10–15 V gate drive.

Can AOD360A70 replace AOI360A70 in existing designs without layout changes?

No - although AOD360A70 and AOI360A70 share identical electrical specifications, they differ in package: AOD360A70 uses TO-252 (DPAK) while AOI360A70 uses TO-251A (IPAK). These packages have different pin pitches, thermal pad dimensions, and mounting footprints. A PCB redesign is required to swap between them; neither is a drop-in replacement for the other.

What is the typical output capacitance (C_oss) of AOD360A70, and why does it matter in flyback design?

The AOD360A70 has a typical C_oss of 34 pF at V_DS = 5 V. In flyback converters, C_oss directly impacts turn-off loss and resonant tank behavior during the dead time. Lower C_oss reduces stored energy (E_oss = 2.8 mJ @ 400 V), decreasing switching loss and improving efficiency - especially critical in high-frequency, high-voltage designs where the AOD360A70 is commonly deployed.