Most are multi-layers board.Aluminum board---the base material is aluminum ,most used in LED,it requires high thermal conductivity.
PCB manufacturing process is very complex ,there are over 30 steps ,we will show you a very simple process here.
Double sided PCB:
Cutting Material-->Drilling holes--->Plating holes--->Outer layer
-->Etching-->Solder mask-->Silkscreen-->HAL(Gold)-->CNC (routing,v-cut)-->Testing-->Final inspection
Cutting Material-->Inner layer-->Press (stackup)--->Drilling holes-->Plating--->Outer layer -->Etching-->Solder mask-->Silkscreen--->HAL(Gold)-->CNC (routing,v-cut)-->Testing-->Final inspection
Storm Circuit offers a full range of PCB fabrication. HDI PCB , RF PCB ,Rigid-flex PCB ,ENEPIG PCB ,large PCB ,impedance control, via in pad, blind/buried PCB .etc
Full range of RF PCB / Microwave PCB and High Frequency materials /Rogers material in stock
10 years aerospace PCB manufacturing experiences
7/24 Live sales &tech support
24 hours fast prototype expedite services
4 Layers HDI PCB as quick as in 5 working days
10 Layer HDI PCB as quick as in 8 working days
16 Layer HDI PCB as quick as in 10 working days
4 & 6 & 8 Layer rigid-flex PCB made from 6 days to 12 days
Storm Circuit Technology Ltd, Made in China with Love.