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PCBs DESIGN

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PCBs/Overview

For electronicassemblies PCBs are substrates providing mechanical support as well as electrical interconnect
PCB: Rigid or flexible
substrate with single or multiple layers of conductors separated by insulating layers

PCBs/Manufacturing Process

Manufacturing process steps(for a typical rigid multilayer PCBrepresenting about 70% of all PCBs manufactured)
PCB data acquisition
Preparation of PCB laminate (core)
Inner layer image transfer
Laminate layers
Drilling and cleaning holes
Make holes conductive
Outer layer image transfer
Surface finish
Final fabrication

PCBs/ManufacturingProcess 1

PCB data acquisition

Files transferred from PCB design house to PCB manufacturing
facility:
Gerber files, drill files, fabrication drawings
File review by PCB manufacturer
Creation of PCB tooling
Photo-tool for image transfer
Image created by PCB software is reproduced on film using laser photoplotters
Drill files
Profile routing files CNC route file
All tooling is stepped and repeated for optimum utilisation of standard
panels (24in x 18in)