CSD17553Q5A is a 30v N-Channel NexFET? Power MOSFET. The NexFET power MOSFET CSD17553Q5A has been designed to minimize losses in power conversion applications. The Operating and Storage Temperature Range is between -55 and 150℃. And the MOSFET CSD17553Q5A is in the VSONP-8 package with 3.1W power dissipation.