The 4 Layer PCB Service is designed for multi-layer circuits.multilayer printed circuit boards offer you the best value when ordering large quantities of 4-layer boards, 4-layer PCB boards, having a low per-square-inch cost and quantity discounts.
Multilayer printed circuit board & Multi-layer pcb
Multilayer PCB consist of 3 or more circuit layers bonded together by a thickness of insulating material called prepreg and core. Multilayer printed circuit boards are most complicated than others, and are generally considered to be the most sophisticated PCB product due to their construction methods and design complexities.
These are a few of the applications using 4-Layer PCB Board and multilayer printed circuit boards :
|? Communications||? Industrial controls|
|? GPS technology||? Aerospace|
|? Computers||? Military|
|? Medical||? Satellite systems|
General specification for 4-layer printed circuit board and Multilayer PCB
1, 4-38 layers
2, Board finished thickness: 0.3mm-7.0mm
3, Material: FR-4, CEM-1, CEM-3, High TG, FR4 halogen Free, Rogers, Telfon.
4, Max. Finished board size: 23*25(580*900mm)
5, Min. Drilled hole size: 6mil(0.15mm)
6, Min. Line width: 3mil(0.075mm), Min. Line spacing: 3mil(0.075mm)
7, Surface finish/treatment: HASL/HASL lead free, Chemical tin, ENIG,Immersion Silver, OSP, etc.
8, Copper thickness: 0.5-20 oz
9, Solder mask color: Green/yellow/black/white/red/blue
10, Copper thickness in hole: >25.0 um(>1mil)
4-layer PCBs are circuit boards made up of 4 electrical layers
superimposed on each other. The copper layers are bonded together by
resin layers(prepreg). PCB has the history from simple double sided
technics to more than 30 layers, and the specifications are more and
more advanced, so the price for 4 or 6 layers are cheaper and cheaper.
Therefore, the designing of 4 or 6 layers is the main stream in the
Core: the frame of the circuit with copper covered on both sides for the making of inner double sided.
Prepreg: indispensible part for multi-layer board as adhesion and insulation.
Solder mask: welding preventing, insulation, anti-corrosion, etc.
Legend: for highlight.
Surface finishing material: immersion tin, immersion gold, silver. OSP, etc.
How to get a quick quote on 4-Layer PCB
please feel free to email us at email@example.com or call us anytime at 86-755-23725796