New high SOA MOSFET enables 48V hot swap in AI servers

MOSFET New high SOA MOSFET enables 48V hot swap in AI servers

2025-05-06 From Alpha and Omega Semiconductor 1 min Reading Time

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Alpha and Omega Semiconductor Limited, a designer, developer, and global supplier of a broad range of discrete power devices, wide band gap power devices, power management ICs, and modules, today announced its AOTL66935 utilizes AOS’ 100V AlphaSGT proprietary MOSFET technology which combines the advantages of trench technology for low on-resistance with high safe operating area capability that meets 48V hot swap requirements in AI server and telecom applications.

Advanced MOSFET handles higher peak currents, delivering a cost-effective, high-performance, and enhanced reliability hot swap solution.(Source: Alpha and Omega Semiconductor Limited) — Advanced MOSFET handles higher peak currents, delivering a cost-effective, high-performance, and enhanced reliability hot swap solution.
(Source: Alpha and Omega Semiconductor Limited)

The AOTL66935 hot swap MOSFET prevents damage to the system by limiting the high inrush current with low power losses due to the very low on-resistance (RDS(ON)). These features help deliver increased performance and reliability in harsh application conditions required in latest AI server designs. The AOTL66935 is available in TO-Leadless (TOLL) package, which is 30 % smaller footprint compared to TO-263 (D2PAK). AOTL66935 is manufactured in IATF 16949-certified facilities. TOLL package technology is compatible with automated optical inspection (AOI) manufacturing requirements.

“48V hot swap in AI servers requires a MOSFET that excels in high current capability while providing exceptional SOA robustness with high reliability. We designed the AOTL66935 to meet these demands, and the low on-resistance reduces the power losses and can enable less devices in parallel,” said Peter H. Wilson, Sr. Director of MOSFET product line at AOS.

Technical Highlights

Part Number

Package

V_DS (V)

V_GS (±V)

T_J (°C)

Continuous Drain Current (A)

Pulsed Drain Current (A)

R_DS(ON) Max (mOhms) @10V

@25°C

@100°C

@25°C

AOTL66935

TOLL

100

175

360

258

1440

1.95

Pricing and Availability

The AOTL66935 MOSFET is immediately available in production quantities with a lead time of 14-16 weeks. The unit price in 1,000-piece quantities is $4.2.

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