Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SRF4073H found under Transistor by Freescale Semiconductor. The National Stock Number assigned to this part is 5961013802524, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SRF4073H.