Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 142WK found under Rectifier Semicondu by Reliance Comm Tec Corp Lorain Pr. The National Stock Number assigned to this part is 5961009036681, 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 142WK.