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AOZ18101DI Series: 5A eFuse Products with Built-in or External Control Blocking FET Suitable for Server Applications

AOZ18101D1 Series from Alpha and Omega Semiconductor
AOZ18101D1 Series from Alpha and Omega Semiconductor

Alpha and Omega Semiconductor Limited has announced the release of the new AOZ18101DI series which is the initial eFuse product for sub-power rails in server applications and is a current-limiting over-voltage protection Efuse targeting applications that require front end protection at the input line. These new products use AOS’s advanced co-packaging technology, a high-performance IC with protection features, and a high SOA Trench MOSFET. In a compact 3mm x 3mm DFN package, these devices are suitable for servers, HDD and SSD drivers, PCI cards, and networking.


The AOZ18101DI-01 and AOZ18101DI-02 series integrated True Reverse Current Blocking (TRCB) for the fault conditions that the power rail at VOUT is higher than the main bus at VIN, allowing no reverse current. Control for external blocking FET is also available for designs already in production by offering a drop-in replacement to existing eFuse products requiring external FETs to implement the TRCB feature.


For loads with high inductive kickback such as hard disc drive, and server fans, the AOZ18101DI-03 and AOZ18101DI-04 series has this TRCB feature disabled to avoid shut down of the input power bus due to a reverse current.



  • Operating Range: 3.5V to 14V

  • 22V Absolute Maximum rating

  • On-Resistance: 20mΩ back-to-back MOSFETs

  • Protection Features: Programmable Over-Current Protection, True Reverse Current Blocking (AOZ18101DI-01 and AOZ18101DI-02), Under-Voltage Lock-Out, Over-Voltage Clamp, Thermal Shutdown Protection, Programmable Soft-Start, Startup SOA Management

  • Package: 3mm x 3mm DFN-10L



  • Servers

  • HDD and SSD drivers

  • PCI cards

  • Networking


Availability and Pricing

The AOZ18101DI series is immediately available in production quantity with a lead-time of 14 weeks. The unit price for AOZ18101DI-01, AOZ18101DI-02, AOZ18101DI-03, and AOZ18101DI-04 starts at $0.72 in 1,000-unit quantities.

Component Datasheet

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