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Multilayer PCB

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Multilayer PCB Flowchart

Rigid Multilayer PCBs

Flexible Circuit Boards

 

Multilayer Registration Control

Prediction: layer-to-layer alignment
One primary characteristic is layer to layer alignment. In addition to our MultiLine tooling systems, we have purchased and implemented the use of the PerfecTest system to fine tune our process and achieve highly accurate scale factor predictions for a variety of material types and core thickness.

Imaging
Saturn has purchased and installed four Olec AT-30 automatic alignment exposure units. These units use four cameras to align artwork top to bottom, and then use panel motion systems to automatically adjust the panel position to a best fit to the artwork. Furthermore, these units have hybrid-collimated light units that ensure exposure light attacks the panel at 90 degree angles to the artwork, which is critical for fine line resolutions.

Microvia Drilling

Formation capabilities
We have installed advanced PCB drilling systems (Excellon Century 2001 and Mania Micronics 86) capable of up to 180k RPM spindle speed, which is critical for microvia formation. Furthermore, our advanced systems use linear motion technology for X, Y, and Z axis motion. This results in not only a higher throughput, but also increased registration accuracy.

Production Plating

Standard production / blind microvias
Saturn has built a custom automatic PCB plating line that has been designed and constructed primarily in-house. The intent was to minimize plating variation, which is the main goal of production plating. To address issues with plating small and blind holes we use mechanical agitation to allow chemical to flow through holes and vibration to remove air from microvias and blind microvias.

PCB Etching

2 mil line and spacing
Saturn has installed a new Hollmuller SES line. This line incorporates the latest in spray technology that minimizes chemical puddling. This is line capable to accurately and uniformly etch down to 2 mil lines and spaces.

Sample 2mil Ln/Sp board
For a sample of our 2 Millimeter Line and Space capabilities, check out our 2 Mil Flexible Printed Circuit Board in the Microelectronics section of our Flex / Rigid-Flex site.
2mil Line Spacing PCB

Multilayer PCB Prototypes

Production quality multi-layer boards
Saturn builds complex quick turn prototypes to production standards per IPC Class III and high reliability testing.

Lamination Process

Automated multilayer lamination room
5,000 square foot expansion houses 3 10-opening Burkle PC-controlled lamination system. SEC has the most automated Multilayer Lamination room in North American Printed Circuit Board Fabrication. Take a quick tour of our Multilayer Lamination Room.