ProjectGeneral process capabilityAdvanced Process Capability
LayoutThrough-holeYESYES
Mechanical blind buried holeYESYES
Metal substrateYESYES
High precision 1st order board1+N+1Rigid-Flex + HDI
High precision 2nd stage board1+1+N+1+1、2+N+2
High precision 3rd order board1+1+1+N+1+1+1、3+N+3
Any layer interconnectionAnylayer


HoleMinimum mechanical drilling0.150.15
Minimum laser drilling0.10.1
Maximum mechanical drilling6.56.5
Minimum slot0.50.5
Minimum copper free hole0.80.5
Hole to hole tolerance±0.05±0.05
Through-hole tolerance±0.075±0.05
Non sinking copper hole tolerance±0.05±0.05
Control drilling depth tolerance±0.10±0.05
Maximum aspect ratio of mechanical drill10:115:1
Maximum laser drill aspect ratio0.8:11:1
Through hole to copper7mil6.5mil


Wiring, solder mask, silk screen printingMinimum inner line width4mil3mil
Minimum inner line width4mil3mil
Minimum outer line width4mil3mil
Minimum outer line spacing4mil3mil
Line width tolerance±20%±10%
Maximum inner copper thickness3/3oz4/4oz
Maximum outer copper thickness3/3oz6/6oz
IMPEDANCE CONTROL TOLERANCE±10%±5%
Layer to layer deviation<10 layers±0.05mm±0.038
Layer to layer deviation>10 layers±0.075±0.05
Hole to padYES
Minimum IC pad size0.20.15
Minimum BGA pad size0.230.2
Solder mask colorGreen, white, black, matte black, yellow, red, blue, etc
Solder mask alignment±0.05mm±0.01mm
Minimum solder bridge resistance3mil3mil
Screen printing colorWhite, black, yellow, red, blue, green, gray, etc
Minimum character height/width0.80mm/0.127mm0.5/0.10mm


Mechanical ProcessGong board tolerance±0.127mm±0.10mm
Punch plate tolerance±0.20mm±0.127mm
V-cut position tolerance±0.10mm±0.075mm
Drilling tolerance±0.10mm±0.05mm
Golden finger angle tolerance20°/30°/45°、±5°20°/30°/45°、±5°
Golden finger width tolerance1.2±0.20mm1.2±0.10mm


OtherSlice reportYes
Solderability testYes
RoHS Declaration Certificate of ConformityYes
Ionic contamination testingYes
Thickness of nickel and goldYes
Impedance Test ReportYes
Temperature cycling testYes
Plate bending and bendingYes


Surface TreatmentSinking gold, spraying tinYes
Sometimes we need to add gold fingers
Sinking gold+spraying tinYes
Immersion TinYes
Immersion SilverYes
Lead-free HASLYes
Gold-platingYes
 Hard gold platingYes


BoardNormal Tg, medium Tg, high TgYes
Lead free, halogen-freeYes
Low dielectric constant plateYes
Low loss boardYes
High frequency laminated boardYes
PI board, polyimide laminated boardYes
BT board, BT resin based copper-clad laminateYes
TeflonYes


Senior Buried capacitor boardNo
Buried resistive boardNo
Embedded heat dissipation copper padyes
Rigid Flexyes
Soft hard combination+high precisionyes
SubstrateNo
Soft hard combination+metal plateNo
Special processSilver and gold plating on the edge of the boardyes
Half holeyes
Lateral apertureyes
Disk holeyes
Back drillyes
Counterbore holeyes


PCB technical characteristics

Technical Characteristics

2019

2020
2021

Highest layer

32
4048

Maximum plate thickness mm

7
810

Minimum plate thickness mm

0.4
0.30.3

Maximum panel size/veneer size mm

610*910 /580*850

620*1000 /580*950

620*1000 /580*950

Minimum core board thickness mm (excluding copper)

0.0750.050.05

Maximum completed copper thickness oz

Inner layer: 6oz; Outer layer: 6oz

Inner layer: 12oz; Outer layer: 6oz

Inner layer: 12oz; Outer layer: 6oz

Minimum line width/line spacing μ m

75/75

65/65

50/50

Minimum hole diameter of mechanical drill mm

0.20
0.150.15

Minimum aperture of laser drill μ m

757585

Maximum through-hole thickness to diameter ratio

13 :116:120:1

Maximum HDI thickness to diameter ratio

0.8:11:11:1

Interlayer alignment (≥ 10L) μ m

12510078

IMPEDANCE CONTROL TOLERANCE

±8%

±7%

±5%

Back drilling depth control capability μ m

±75

±75

±75

Minimum pore wall clearance (different networks) mm

0.500.450.40

Maximum resin (or copper paste) plug hole thickness to diameter ratio

17:119:122:1

Special process

POFV process (disc hole VIPPO), buried copper block process, high-frequency high-speed sheet metal

Surface Treatment

ENIG, electroplated gold, HASL (HF) with/without tin spray, OSP, electroplated tin, nickel palladium ENEPIG, electroplated silver, electroplated tin copper, electroplated soft gold