HDI PCB CAPABILITIES

HDI PCB CAPABILITIES

High Density Interconnect (HDI) PCBs are printed circuit boards with a much higher wiring and pad connection density than a conventional PCB. HDI PCBs are featured by fine trace and spacing, small pad, micro-via, blind and buried via, stager via, stack via, via-in-pad and via-on-pad. HDI PCB manufacturing is a fast-growing technology since market demand for thinner and smaller PCB boards, which can transmit high speed signals with low signal loss, have steadily increased.

HDI PCB manufacturing process requires laser drillingVCP plating, one or more sequential lamination cycles, high registration precision, non-conductive resin filling, copper filling, impedance control, and etc., which has higher requirements on manufacturing facilities, engineers and technicians. With the following HDI PCB Capacities, our facilities have more comprehensive capacities in PCB Fabrication and PCB Assembly. We are happy to provide Turnkey PCB Assembly services for HDI PCB projects.

Item Standard Advanced
Layer Count 4-16 4-20
Min Board Thickness 0.35mm (13.78mil) 0.3mm(11.8mil)
Max Board Thickness 4.2mm (250mil) 6mm (236mil)
Min Initial Copper Foil Weight 1/3 oz 1/3 oz
Min Mech Drill Diameter 0.2mm (7.87mil) 0.15mm (5.9mil)
Min Laser Drill Diameter 0.1mm (4mil) 0.1mm (4mil)
Min Finished Hole Size 0.1mm (4mil) 0.1mm (4mil)
Blind Via Finished Hole Size 0.1mm (4mil) 0 (Fully Plated shut)
Buried Via Finished Hole Size 0.1mm (4mil) 0.1mm (4mil)
Minimum Trace Width/Spacing 3mil/3mil 2.75mil/2.75mil
Min Pad Size for E-test 6mil 6mil
Minimum Wire Bond Pad size > 6mil 5mil
Controlled Impedance Tolerance +/-5%, +/-10% +/-5%, +/-10%
Solder Mask Registration +/-2mil +/-2mil
Solder Mask Min Dam Size 0.1mm (4mil) 0.1mm (4mil)
Min Diameter Rout Cutter Available 0.6mm (24mil) 0.6mm (24mil)
Laser Hole Location Tolerance 0.5mil 0.5mil
Thickness Tolerance 10% (as per stack-up) < 10% (as per stack-up)
Sequential Lamination 3 or less lamination cycles > 3 lamination cycles
Buried Vias 2 or less > 3
Blind Vias Yes Yes
Stack Vias Yes Yes
Staggered Vias Yes Yes
Via-in-Pad Yes Yes
Conductive Filled Vias Yes Yes
Non-Conductive Filled Vias Yes Yes
Aspect Ratio -10:1(HASL Lead free, HASL Lead, ENIG, Immersion Tin, Immersion silver, ENEPIG);-8:1(OSP) -10:1(HASL Lead free, HASL Lead, ENIG, Immersion Tin, Immersion silver, ENEPIG);-8:1(OSP)
Surface Finish
Flash Gold (Electroplated Gold) Yes Yes
ENIG Yes Yes
Hard Gold Yes Yes
Flash Gold Yes Yes
HASL Lead Free Yes Yes
ENEPIG Yes Yes
Soft Gold Yes Yes
Immersion Silver Yes Yes
Immersion Tin Yes Yes
ENIG+OSP Yes Yes
ENIG+Gold Finger Yes Yes
Flash Gold (Electroplated Gold)+Gold finger Yes Yes
Immersion Silver+Gold Finger Yes Yes
Immersion Tin+Gold finger Yes Yes
Solder Mask
Semi – Glossy Yes Yes
Glossy Yes Yes
Matte Yes Yes
Green Yes Yes
Black Yes Yes
Red Yes Yes
Blue Yes Yes
Yellow Yes Yes
White Yes Yes
Clear Yes Yes
Bright White Yes Yes
Purple Yes Yes
Silkscreen
All colors Yes Yes
Other Process
Routed Array
V-Cut, Edge to Copper 0.25mm (9.8mil) 0.25mm (9.8mil)
V-Cut Angle 35°,45°,60° 35°,45°,60°
Countersink Yes Yes
Counterbore Yes Yes
Beveling Yes Yes
Milling +/-3mil +/-3mil
Edge Castellation Yes Yes
Edge Plating Yes Yes
Heatsinks Yes Yes

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