Heavy Copper PCBs

Epec has been building heavy cooper circuit boards with traces and copper planes of up to 6 ounces for over 20 years. Our expertise is in producing at a reasonable cost, heavy copper PCB's that are of proven designs. Our engineering team can work with you to review your design to make sure that they can be manufactured with the highest quality at the best overall cost.

Heavy Copper PCB

Industries Served Using Heavy Copper

Welding Equipment
Solar Panel Manufacturers
Power Supplies
Automotive
Electrical Power Distribution
Power Converters

Heavy Copper PCB Capabilities

Maximum Number of Layers = 16
Laminate – FR-4 (All Tg Ranges), Teflon, Ceramic
Finished Thickness = .020" - .275"
Green, Blue, Red, Black, Clear & White Solder Masks & Legend Inks
Minimum Soldermask Clearance – 6 mils
Minimum Solderdam Width – 5.5 mils
Hot Air Solder Leveling (HASL)
Immersion Gold (ENIG) & Immersion Silver
Blind & Buried Vias
Minimum Drill Bit Hole Size = .012"
Minimum Holes Size - .008" +.005"/-.008"
Maximum Hole Aspect Ratio = 10:1
Maximum Copper Weight = 6 oz. (UL Approved)
Controlled Impedance +/- 10%
Minimum Silkscreen Line Width – 8 mils

Production Minimums

Measured in Inches	Hoz	1oz	2oz	3oz	4oz	5oz	6oz
Min. Conductor Width	0.004	0.005	0.006	0.007	0.008	0.009	0.10
Min. Conductor Spacing	0.004	0.006	0.008	0.012	0.014	0.017	0.020
Min. Pad to Pad Spacing	0.004	0.006	0.008	0.012	0.014	0.017	0.020
Min. Conductor-to-Pad Spacing	0.004	0.006	0.008	0.012	0.014	0.017	0.020
Min. PTH Annular Ring	0.006	0.006	0.008	0.009	0.011	0.013	0.014
Min. VIA Annular Ring	0.006	0.006	0.008	0.009	0.011	0.013	0.014
Min. Distance - Hole to Board Edge	0.010	0.010	0.010	0.010	0.010	0.010	0.010