PCB Fabrication

Company Information:


Alcanta PCB offer PCB from 2 Layer to 90 layers. We offer FR4 PCB, Rigid-Flex PCB, Buried and Blind Vias PCB, Impedance Control PCB, Hybrids & Mixed Dielectrics PCB,Cavity Boards PCB,Backdrilling PCB and others...

Shenzheng city, China


  • Phone 0860755 85241496


Company Postings:

(3) products in the catalog

PCB Fabrication

PCB Fabrication


PCB Fabrication


Fabrication Services

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PCB Fabrication Description:

The layer count of PCB (Printed Circuit Board) determines its manufacturing technology difficulty and PCB manufacturing cost. PCB boards can be briefly classified into two categories: single-layer (single-sided) PCB and double-layer (double-sided) PCB. When it comes to high-end electronic products, a couple of signal layers can be added to the inside of PCB apart from surface routing due to some limitations in terms of board real estate and board design. During the manufacturing procedure, after routing for each layer has been finished with positioning and lamination completed, multiple layers of signals will be pressed into a single board that is called multilayer PCB. Therefore, a multilayer PCB refers to any piece of circuit board containing more than two layers of signals. Multilayer PCBs can be multilayer rigid PCB, multilayer flex PCB and flex-rigid multilayer PCB.Multilayer PCB Fabrication.

Necessity of Multilayer PCB

Due to the increasing use of IC (Integrated Circuit) package, interconnection lines become so dense that multi-substrate boards become necessary. In addition, some design problems, like noise, stray capacitance, crosstalk etc., are so protruding that should be solved through multilayer resolution. As a result, PCB design has to make sure that signal lines should be minimized and parallel circuits should be avoided, which is apparently difficult to be obtained in either single-sided or double-sided design. Therefore, multilayer PCBs come into being for the acquisition of perfect performance of circuits.

The original aim of multilayer PCB is to provide more freedom in terms of routing for circuits that are complex and/or sensitive to noise. There are at least three layers in a multilayer PCB and two layers are external with the left layer(s) synthesized inside insulating plate. The electrical connection in a multilayer PCB derives from plated through hole on the cross section of circuit board.

Advantages of Multilayer PCB

• Smaller size
• Lower weight
• Higher speed of signal transmission
• Constantly low impedance
• Better shielding effect
• Higher assembly density

Standard Features Standard Advanced
Maximum Layer Count 46L 100L
Maximum Panel Size  21×24″ 24×42″
Outer Layer Trace/Spacing 50µm/50µm 40µm/40µm
(1/3oz starting foil + platig) [0.0035″/0.0035″] [0.0025″/0.003″]
Inner Layer Trace/Spacing 45µm/45µm 35µm/35µm
 (Hoz inner layer cu)    [0.003″/0.003″] [0.002″/0.002″]
Maximum PCB Thickness 3.2mm 6.5mm 
Minimum PCB Thickness 0.20mm (8mil) 0.10mm (4mil)
Minimum Mechancial Drill Size 0.20mm (8mil) 0.10mm (4mil)
Minimum Laser Drill Size 0.10mm (4mil) 0.08mm (3mil)
Maximum PCB Aspect Ratio 10:01 25:01:00
Maximum Copper Weight 5 oz [178µm] 30 oz [1050µm]
Minimum Copper Weight 1/3 oz [12µm] 1/4 oz [9µm]
Minimum Core Thickness 40µm  16µm 
Minimum Dielectric Thickness 30µm  12µm 
Minimum Pad Size Over Drill  0.46mm  0.4mm 
Solder Mask Registration ± 50µm ± 25µm 
Minimum Solder Mask Dam 76µm  64µm 
Copper Feature to Edge, V‐cut (30°) 0.40mm  0.36mm 
Copper Feature to PCB Edge, Routed 0.25mm  0.20mm
Tolerance on Overall  ± 100µm  ±50µm 
Technologies Standard Advanced
Rigid‐Flex & Flexible Circuits Y Y
Buried and Blind Vias Y Y
Sequential Lamination Y Y
Impedance Control  ± 10% ± 5%
Hybrids & Mixed Dielectrics  Y Y
Aluminum PCB’s  Y Y
Non‐Conductive Via Fill (VIP)  Y Y
Conductive Via Fill  Y Y
Cavity Boards  Y Y
Backdrilling Y Y
Controlled Depth Drill and Rout Y Y
Edge Plating  Y Y
Buried Capacitance Y Y
Etch Back Y Y
In‐board Beveling Y Y
2‐D Bar Code Printing Y Y

Multilayer PCBs can be served in so many industries including consumer electronics, medical care, aerospace, telecommunications, military, automotive, wearables, IoT etc. based on its benefits. Alcanta PCB has been striving to provide high-quality multilayer PCBs for customers with full concerns in terms of design, cost and lead time. Contact us and follow rainbows with Alcanta PCB!

PCB Fabrication was added in Jul 2020

PCB Fabrication has been viewed 121 times


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