... , for Reading LED Light in Boeing 737 Aircraft. Single-Sided PCB,Aluminum Base ( Bergquist ),White Solder Mask,HASL,For Reading LED Light ... Inspection (including warp & twist check) Dimensional Inspection (finished hole sizes, pcb profiles, etc) MicrosectionSolderability Test (245±5ºC; 3-5 sec ... Mask, Carbon PrintingMaterialFR4, ROGERS, Taconic, ARLON, BT, Ceramic, Aluminum Aluminum Material PCB