PC Board Fabrication Capabilities Roadmap

South Bay Circuits offers flexible and far reaching technologies to our customers. Presented below is a technology road map to consider when creating Designs and Printed Circuit Board Layouts. Technologies may be available but each comes with relative availability, reliability, quality, and cost factors. Standard is most cost effective and readily available. Advanced is also readily available at a higher cost level than Standard. Innovative are technologies that are developing. Availability may be limited and cost is significantly higher than Standard technologies.

Circuit Layers 0 – 20 20 + 30 +
Circuit Trace/Space (External with 1/2 Oz Cu) .004"/.004" .003"/.003" .002"/.002"
Circuit Trace/Space (Internal with 1 Oz Cu) .004"/.004" .003"/.003" .002"/.002"
Circuit Trace/Space (2 Oz Cu) .010"/.010" .008"/.008" .007"/.007”
Preferred Copper Foil Starting Weight 1/2 OZ - -
Maximum Starting Weight Before Plating (Cu Foil) 3 OZ - -
Minimum Board Thickness .025" .020" .018"
Minimum Finished Core Thickness .004" .003" .002"
Pre-Preg Tolerance +/-.003” +/-.002” +/-.002”
Min Drilled Hole Thickness (.062” Finished Thickness) .010" .008" .007"
Min Drilled Hole Edge to Drilled Hole Edge .010” .010” .010”
Blind Vias Yes Yes Yes
Micro Vias No Limited  Yes
Microvia Hole Diameter .006" .004" .004"
Buried Vias Yes  Yes Yes
Sequential Lamination Yes Yes Yes
Hole Aspect Ratio 10:1 14:1 16:1
BGA Package Size 0.5mm 0.4mm < 0.4mm
SMOBC - Tin/Lead Finish 63/37 SnPb - -
Lead-Free Surface Finish Yes Yes Yes
ENIG (Electroless/Immersion Gold) Yes Yes Yes
Immersion Silver Finish Yes Yes Yes
Gold Body Yes Yes Yes
Gold Fingers Yes Yes Yes
Edge Plating Yes Yes Yes
Liquid Photoimageable (LPI) Solder Mask Registration .003” .002” .002”
LPI Solder Mask Dams between SMT Pads Spacing .010” .007” .007”
Via Capping Only – Dry Film Solder Mask (Conformask) Yes Yes Yes
Controlled Impedance Yes Yes Yes
Via Hole Plugging (non-conductive) Yes Yes Yes
Impedance Control +/- 10% +/- 7% +/- 5%

SBC Guidelines for PC Board Manufacturability (PDF)

Please contact us for further discussion or engineer review of your requirement.

Certified ISO9001
ISO 9001:2008

SBC is an ISO 9001:2015 certified company through UL-DQS. South Bay Circuits utilizes ISO 9001:2015 eight fundamental quality management principles to help improve our PC Board Fab, PC Assembly, and Box Build performance. Certificate #: 10000903 QM15

ITAR Registration
ITAR registered printed circuit board fabrication

ITAR Registered! We are a manufacturer that builds defense articles with related technical data that can be defined on the United States Munitions List (Part 121 of the ITAR), where we are registered.

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