Owning 82 patents, leading the innovation of PCB technology

What’s the shelf life for a PCB?

Please refer to the table below:

How many types of surface finish Sun&Lynn can do? How shall we choose surface finish for HDI PCB?

Sun&Lynn has a complete series of surface finish, such as: ENIG, OSP, HASL, Gold plating(soft/hard), Immersion Silver, Immersion Tin, Silver plating, Tin plating, Carbon Ink and etc.. OSP, ENIG, OSP+ENIG are widely used on HDI, usually we suggest customer use OSP or OSP+ENIG if the BGA PAD size smaller than 0.3mm.

What’s the key equipments for HDI manufacturing? Does Sun&Lynn’s capability can meet customer’s tech

Key equipments as following: Laser drilling machine, Pressing machine, VCP line, Automatic Exposing machine, LDI and etc. The equipments we bought are the best in the industry, laser drilling machines are from Mitsubishi and Hitachi, LDI machines are from Screen(Japan), Automatic Exposing machines are also from Hitachi, can meet customer’s technical requirements.

What’s the typical process flow for multi-layer PCB?

Material cutting- Inner dry film- inner etching- Inner AOI- Multi-bond – Layup- Pressing- Drilling- PTH – Panel Plating- Outer Dry Film- Pattern Plating- Outer etching- Outer AOI- Solder Mask- Component Mark – Surface finish- Routing – E/T – Visual Inspection.