Alpha & Omega Semiconductor Inc. AOB380A60CL

Overview

AOB380A60CL from Alpha & Omega Semiconductor is a 600V, N-channel enhancement-mode MOSFET in TO-263 (D2PAK) package, with R_DS(ON) ≤ 0.38 Ω at V_GS = 10 V, 44 A pulsed drain current, 18 nC total gate charge, and 100% UIS-tested ruggedness. It serves as a primary switching device in high-efficiency SMPS topologies including PFC, flyback, and LLC converters for server power, lighting, and TV applications.

For engineers reviewing the AOB380A60CL datasheet, pinout, applications, or equivalent options, key selection criteria include its 700 V breakdown voltage rating, 0.95 °C/W junction-to-case thermal resistance, body-diode reverse recovery time of 251 ns, and optimized EMI performance via low Crss (2.4 pF) and controlled dv/dt ruggedness (100 V/ns).

Technical Context

This MOSFET employs proprietary aMOS5™ technology to achieve low conduction loss and fast, controlled switching. Its gate threshold voltage (2.6–3.8 V) ensures robust noise immunity, while the 4.8 Ω gate resistance and 7 nC gate-source charge support stable drive requirements in hard-switched topologies.

The device features an enhanced body diode with 11 A continuous and 44 A pulsed current capability, 3.1 mC reverse recovery charge, and 251 ns reverse recovery time-enabling reliable operation in discontinuous conduction mode (DCM) and quasi-resonant (QR) flyback designs without external snubbing.

Key Specifications

Pinout & Package

AOB380A60CL is housed in a surface-mount TO-263 (D2PAK) package with G–D–S terminal arrangement on the bottom side. The exposed drain pad provides low-inductance, high-current path and thermal interface to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP36N60M2 and IPP60R190C7, AOB380A60CL offers superior balance of switching speed (18 nC Q_g), ruggedness (100% UIS), and body-diode performance (251 ns t_rr)-making it optimal for high-frequency, high-reliability flyback and LLC designs where layout space and thermal constraints favor TO-263 mounting.

Availability

AOB380A60CL is available at Aetrix Electronics and suitable for server power supplies, LED drivers, and consumer AC/DC adapters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle availability.

Supply support for AOB380A60CL 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, consumer, and industrial markets.

The AOB380A60CL belongs to AOS' aMOS5™ high-voltage MOSFET family, engineered specifically for high-efficiency, high-power-density AC/DC conversion in datacenter, lighting, and consumer power applications.

FAQ

What is the maximum junction temperature rating for AOB380A60CL?

The AOB380A60CL has a maximum junction temperature (T_J) rating of 150 °C, validated across all operating conditions. This rating is used to define its Safe Operating Area (SOA), thermal derating curves, and avalanche energy limits. Operation beyond 150 °C risks permanent degradation of the silicon die and bond wires. The device's R_θJC = 0.95 °C/W enables reliable thermal management when mounted on ≥200 mm² 2-oz copper with thermal vias.

Does AOB380A60CL support logic-level gate drive?

AOB380A60CL is not a logic-level MOSFET; its gate threshold voltage (V_GS(th)) ranges from 2.6 V to 3.8 V, and full enhancement requires V_GS ≥ 10 V for R_DS(ON) ≤ 0.38 Ω. Driving it with 5 V logic will result in high on-resistance (>2 Ω) and excessive conduction loss. AOB380A60CL must be driven with a dedicated gate driver capable of delivering ≥10 V, ≥1 A peak current, and low output impedance to ensure clean switching.

Is AOB380A60CL suitable for synchronous rectification?

AOB380A60CL is not recommended for synchronous rectification due to its relatively high R_DS(ON) (0.38 Ω) and non-optimized body diode forward voltage (V_SD = 0.85–1.2 V). Synchronous rectifiers require sub-50 mΩ R_DS(ON) and ultra-fast, low-V_F body diodes to outperform Schottky diodes. For SR applications, AOS recommends dedicated low-R_DS(ON) devices such as AOZ3012CI or AON6254 instead of AOB380A60CL.

What is the meaning of "100% Rg Tested" for AOB380A60CL?

"100% Rg Tested" means every AOB380A60CL unit undergoes inline measurement of its intrinsic gate resistance (R_g = 4.8 Ω typ) during final test. This ensures consistent gate drive timing, predictable switching behavior, and reduced risk of oscillation or shoot-through in high-speed applications. Unlike statistical sampling, 100% Rg testing guarantees parameter compliance across the full production lot, supporting mission-critical power designs.

Can AOB380A60CL replace AOT380A60CL in existing TO-220 layouts?

No, AOB380A60CL cannot directly replace AOT380A60CL without PCB redesign. AOB380A60CL uses a TO-263 (D2PAK) package with G–D–S pinout and an exposed drain pad requiring solder paste stencil and thermal via layout, whereas AOT380A60CL uses through-hole TO-220 with different lead spacing and no thermal pad. Mechanical, thermal, and electrical interfaces are incompatible; replacement requires board revision and thermal validation.