Multilayer PCBs

The multilayer PCB segment is a big part of our production. In order to support this important segment, we have developed long-standing relationships with a broad factory base. The factories are carefully selected in our sourcing process.

What is a multilayer PCB?

It is a PCB made with three or more conductive copper layers. The conductive foil appears to be various layers of a multi-sided circuit board. The different inner layers are processed in pairs (on a core) and then bonded together using prepreg as the insulating layer. The layers are then placed in such a way that both sides of the PCB can be used to mount components with additional tracking/electrical connections on the inside of the board. Vias are used as a source of the electrical connections between the different layers of a multilayer PCB.

Many products use multilayer PCBs, including computers, medical equipment, in-car systems, GPS and satellite systems, industrial control systems

Please contact your local NCAB Group company if you need further information or assistance, we are happy to help you.

Feature	NCAB´s technical specification
Number of layers	4 – 22 layers standard, 30 layers advanced, 40 layers prototype.
Technology highlights	Multiple layers of epoxy glass fiber bonded together with multiple layers of copper of varying thicknesses.
Materials	High performance FR4, halogen-free FR4, low loss and low Dk materials
Copper weights (finished)	18μm – 210μm, advanced 1050μm / 30oz
Minimum track and gap	0.075mm / 0.075mm
PCB thickness	0.40mm – 7.0mm
Maxmimum dimensions	580mm x 1080mm, advanced 610mm x 1400mm
Surface finishes available	HASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion Tin, Immersion Silver, Electrolytic gold, Gold fingers
Minimum mechanical drill	0.20mm
Minimum laser drill	0.10mm standard, 0.075mm advanced

Download our design guidelines for Multilayer circuit boards

To prevent getting it wrong from the start, we have put together our design guidelines, to use as a checklist.

Design guidelines