Alpha & Omega Semiconductor Inc. AOK30B60D1

Overview

AOK30B60D1 from Alpha & Omega Semiconductor is a 600V, 30A co-packaged IGBT with integrated soft-recovery anti-parallel diode, designed for high-efficiency switching in hard-switched industrial inverters. It delivers 1.85V V_CE(sat) at 25°C, 96A short-circuit rating with 500ns withstand time, and 0.6°C/W IGBT junction-to-case thermal resistance - enabling compact thermal design in welding machines and solar inverters.

For engineers reviewing the AOK30B60D1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 600V blocking voltage, 30A continuous collector current at T_C=100°C, soft diode reverse recovery (t_rr = 120ns at 25°C), low gate charge (Q_g = 34nC), and TO-247 package compatibility with standard heatsink mounting.

Technical Context

The AOK30B60D1 integrates an optimized trench-gate field-stop IGBT die with a soft-recovery FRD (fast recovery diode) in a single TO-247 molded package. Its gate threshold voltage (V_GE(th)) ranges from 5.6V to 10V, ensuring robust noise immunity while supporting standard ±15V gate drive. The device features low C_res (5pF) and high g_FS (13S), enabling fast, controllable turn-on with minimal Miller-induced oscillation under high dV/dt conditions.

Thermally, it separates IGBT and diode junctions into distinct thermal paths: R_θJC(IGBT) = 0.6°C/W and R_θJC(diode) = 1.7°C/W. Its 500ns short-circuit withstand time at V_GE = 15V and V_CE ≤ 400V supports reliable protection in overcurrent events without external desaturation circuitry in many UPS and inverter designs.

Key Specifications

Pinout & Package

Package: TO-247 (3-lead, isolated tab). Standard through-hole mounting with electrically isolated collector tab for direct heatsink attachment and simplified thermal path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT-with-diode applications.

Compared with IXGN30N60B3 and IKP30N60T6, the AOK30B60D1 uniquely balances low conduction loss, soft diode recovery, and moderate short-circuit robustness - making it optimal for cost-sensitive, thermally constrained welding and solar inverter designs where EMI and thermal density are primary constraints.

Availability

AOK30B60D1 is available at Aetrix Electronics and suitable for welding power supplies, solar string inverters, and uninterruptible power supplies requiring stable component supply, consistent parametric performance across production lots, and long-term industrial lifecycle support.

Supply support for AOK30B60D1 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 modules for industrial, computing, and automotive markets.

The Alpha IGBT™ product line targets high-efficiency, high-reliability hard-switched applications - specifically engineered for reduced conduction and switching losses, robust short-circuit behavior, and ease of paralleling in welding, solar, and UPS systems.

FAQ

What is the maximum continuous collector current rating for AOK30B60D1 at case temperature 100°C?

The AOK30B60D1 is rated for 30A continuous collector current at T_C = 100°C, as specified in its Absolute Maximum Ratings table. This value reflects sustained conduction capability under thermal equilibrium with proper heatsinking, and is validated by the device's 0.6°C/W junction-to-case thermal resistance and 150°C maximum junction temperature rating.

Does AOK30B60D1 include an integrated diode, and what are its key recovery characteristics?

Yes, the AOK30B60D1 integrates a soft-recovery fast recovery diode (FRD) co-packaged with the IGBT in a single TO-247 housing. At T_J = 25°C, its reverse recovery time (t_rr) is 120ns, reverse recovery charge (Q_rr) is 0.5mC, and peak reverse recovery current (I_rm) is 7A - all measured at I_F = 15A, dI/dt = 200A/μs, and V_CE = 400V.

What is the short-circuit withstand capability of AOK30B60D1, and under what test conditions is it specified?

The AOK30B60D1 has a short-circuit withstand time of 500ns, tested at V_GE = 15V, V_CE ≤ 400V, T_C = 25°C, with ≥1.0s delay between successive short circuits. This rating applies to the IGBT portion only and assumes gate drive remains active during the fault - no external desaturation circuit is required for basic protection within this window.

What gate drive voltage range is recommended for reliable operation of AOK30B60D1?

AOK30B60D1 specifies a gate-emitter threshold voltage (V_GE(th)) range of 5.6V to 10V, with maximum rated V_GE of ±20V. For robust switching, AOS recommends +15V turn-on and –5V to –10V turn-off. Operating within ±15V ensures full enhancement while maintaining margin against gate oxide stress and transient overvoltage.

How does the thermal resistance of AOK30B60D1 compare between IGBT and diode sections?

The AOK30B60D1 features separate thermal paths: R_θJC = 0.6°C/W for the IGBT die and R_θJC = 1.7°C/W for the diode die. This asymmetry reflects differing power densities and die sizes - the IGBT handles higher average power, so its lower thermal resistance prioritizes junction temperature control during continuous conduction, while the diode's higher value aligns with pulsed freewheeling duty.