A new metal–oxide semiconductor field-effect transistor (MOSFET) product group developed by Nexperia features MOSFETs with optimized parameters for specific applications. By focusing on individual applications, the application-specific field-effect transistors (ASFETs) can deliver performance improvements.
ASFET devices are available for battery isolation, motor control, hot-swap and power over Ethernet applications. Each family in the product group offers tailored performance improvements based on the application. One 
Source: Nexperia example includes a three- to fivefold improvement in safe operating area for hot-swap applications, such as always-on rack-based computers, communications and storage systems. For DC motor control, the optimized MOSFET can handle a current drain of up to 300 A in a power-SO8 package that provides protection during high-torque start-ups or fault conditions.
“There are 100+ parameters on a regular MOSFET datasheet but usually only a few are critical in each project,” said Chris Boyce, senior director for the Power MOSFETs Group at Nexperia. “As designers push the boundaries of performance, it is crucial to understand how the MOSFET will be used in the application. However, as the applications change, so do the critical parameters.”
The company plans to expand the ASFET series with a new family of automotive products with guaranteed repetitive avalanche performance for driving inductive loads.
