Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TSP OPT 12 found under Charger Battery by Advanced Measurement Technology. The National Stock Number assigned to this part is 6130016655272, and the Federal Supply Class is 6130 Converters Electrical Non Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TSP OPT 12.