Island PCB. Universal PCB with solder fields in chessboard design "BlockBoard LP 07" FR 4 150 x 75 x1.6 MM tin-plated with copper lamination for building crossovers including spacers. Island PCB for the construction of electronic circuits. Drill diameter: 1.6 mm Base material: FR 4 epoxy Tinning of the copper surface: 70 µm Copper lamination: 35 µm incl. 4 spacers.