China pcb manufacturer-Hitech Circuits Co.,Limited

pcbcertificates

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 multilayer printed circuit boards:

● Communications ● Industrial controls
● GPS technology ● Aerospace
● Computers ● Military
● Medical ● Satellite systems

General specification for Multi-layer printed circuit board

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)

1. 4 layers Semi hole multilayer printed circuit board

4L-semi-hole-multilayer-pcb        4Lsemi hole multilayer pcb
        Technical description,
        Material: FR-4 Tg150 Halogen free
        Board thickness: 0.8mm
        Surface finished: Immersion gold
        Copper thickness: 1 Oz for all layers
        Solder mask: TaiYo blue
        Min through hole: 0.2mm
        Consumer Electronics

2. 6 Layers multi-layer PCB

Multilayer-printed-circuit-board-6L        6L multilayer printed circuit board
        Technical description,
        Material: FR-4 Tg170
        Board thickness: 1.58mm
        Surface finished: Immersion gold
        Copper thickness: 1 Oz for all layers
        Min.line width/space: 5mil
        Min through hole: 0.2mm
        Medical

 

3. 10 layers Multilayer printed wiring board

10L-Multilayer-printed-wiring-board        10L multilayer printed wiring board
        Technical description,
        Material: FR-4 Tg170
        Board thickness: 1.6mm
        Surface finished: Immersion gold+Controlled Impedance
        Copper thickness: H Oz for all layers
        Min.line width/space: 3.5mil
        Min through hole: 0.2mm
        Communications

 

4. 10 layers multilayer pcb

10L-Multilayer-pcb        10L multilayer pcb
        Technical description,
        Material: FR-4 Tg170
        Board thickness: 1.6mm
        Surface finished: Immersion gold+Controlled Impedance
        Copper thickness: 1 Oz for all layers
        Min.line width/space: 4mil
        Min through hole: 0.15mm
                                                                  Military

5. 18 layers multilayer board

18L-Multilayer-board        18L multilayer board
        Technical description,
        Material: FR-4 Tg180
        Board thickness: 2.2mm
        Surface finished: Immersion gold+Controlled Impedance
        Copper thickness: 1 Oz for all layers
        Min.line width/space: 4mil
        Min through hole: 0.25mm
        Medical