Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPA2540-A-P found under Amplifier Synchro S by Computer Conversions Corporation. The National Stock Number assigned to this part is 5996015205862, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SPA2540-A-P.