4 Layer Columbia University PCB

Major testing equipment,aoi, flying probe tester, tester, impedance tester, tensile tester, rohs tester, coordinate measuring machine, thermal shock chamber, all just for to make the high quality!we fabricate many enepig pcbs and impedance control pcbs.we also offer rf pcbs to many usa university. Pcb features:1.layer:42.material: fr43.thickness: 0.4mm4.copper: 1oz5.mini hole: 0.15mm6.mini width/space: 0.15mm/0.15mm7.finish: immersion goldour manufacturing capability:manufacture capability layers: 1-32 layersmaterials: cem1, cem3, teflon, rogers, fr-4, high tg fr-4, aluminum base, halogen freemax board size: 510*1200mmmaterial: rohs directive-compliantpcb thickness: 1.6mm-6.4mmout layer copper thickness: 1-6ozinner layer copper thickness: 1oz-12ozmax board thickness: 6.0mmminimum hole size: 0.150mmminimum line width/space: 3/3milmin s/m pitch: 0.1mm (4mil)plate thickness and aperture ratio: 12:1minimum hole copper: 20μmhole diameter tolerance (pth): ±0.075mm (3mil)hole diameter tolerance (npth): ±0.05mm (2mil)hole position deviation: ±0.05mm (2mil)outline tolerance: ±0.05mm (2mil)surface finish: hasl leadfree, immersion enig, chem tin, flash gold, osp, gold finger, peelable, immersion silver,enepigsolder mask: green/blue/red/black,purple,white,yellow,transparent legend: white/black/yellowoutline: rout and score/v-cute-test: 100% top 10 reasons why you should buy pcbs and pcbas from storm circuit1.