Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ECG 156-10PK found under Semiconductor Devic by Portland Valve Llc. The National Stock Number assigned to this part is 5961015230793, 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 ECG 156-10PK.