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Alpha and Omega Semiconductor Introduces Best-In-Class Power MOSFETs for Portable Applications

Alpha & Omega » AON7421, AON7423

The new devices feature industry lowest on-resistance in an ultra-thin DFN 3x3 power package

Alpha and Omega Semiconductor Limited (AOS) set new standards in power density and energy efficiency for power MOSFETs in an ultra-thin (0.8 mm) DFN 3×3 package. These devices are implemented on AOS’ proprietary AlphaMOS technology. The combined benefits of longer battery life and a compact form factor make these devices ideal for space-constrained portable applications such as tablet PCs, smart phones, eReaders, notebook computers, digital cameras and portable music players.

Alpha and Omega - AON7421, AON7423

The AON7421 and AON7423 are best-in-class 20V P-channel devices with the lowest RDS(ON) in the market of similar package types. AON7421’s on-resistance value at a 2.5V gate voltage is 20% less than the closest competitive device. AON7423 is a low threshold device that operates with a gate drive as low as 1.5V, allowing efficient load switching for low voltage supply rails.

Device Specification Table


Max. RDS(ON)
@ TA = 25°C
@ TA = 25°C
@ –10V
@ –4.5V
@ –2.5V
@ –1.8V
@ –1.5V
–20 V
4.6 mΩ
5.7 mΩ
8.2 mΩ
6.2 W
–50 A
–20 V
±8 V
5 mΩ
6.4 mΩ
8 mΩ
10.5 mΩ
6.3 W
–50 A

Pricing and Availability

These devices are immediately available in production quantities with a lead-time of 12 weeks. The unit price for 1,000 pieces is $0.70 for each device.

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