Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CB502B503B found under Capacitor Fixed Plastic Dielectr by Laselco Pacific. The National Stock Number assigned to this part is 5910005561741, and the Federal Supply Class is 5910 Capacitors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CB502B503B.