... ISO TS1694 PCB types Gold plated PCB, tin plated PCB, immersion gold/silver/tin PCB, nickel-gold plated PCB, half-hole PCB, gold finger PCB, OSP board ... finishing: lead-free HASL, immersion gold/tin/silver, OSP, gold finger plating, selective immersion gold and gold plating Maximum panel size: 550 x ... Minimum board thickness: 2L 0.20mm, 4L 0.40mm, 6 to 22L 0.60mm Minimum core thickness: 0.10mm Minimum ...