4-layer 2oz Peelable Mask PCB 1.PCB P/N:2876414 2.Layer: 4L 3.Base material: FR-4 4.Board thickness: 1.6mm 5.Final copper: 70um 6.Surface finish: Immersion gold, Au: 3uâ?� min. 7.Solder mask: Green 8.Profile: Routing + v-cut 9.E-test: 100% fixture 10.Special technology: 4 Layer 2oz peelable mask PCB 11.Quality report: solderability test, final inspection and microsection 12.Certificate: UL, ISO9001, ISO14001, RoHS 13.100% E-test, outing outline