技术支持

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Design rules of HDI
Symbol Description Standard Advanced
A Minimum line width on outer layer 50 40
B Minimum line spacing on outer layer 50 40
C Minimum line width on inner layer 50 40
D Minimum line spacing on inner layer 50 40
E Minimum blind via hole size 75 75
F Minimum blind via capture pad size E + 120 E + 80
G Minimum blind via land pad size E + 120 E + 80
H Laminated prepreg thickness E * 0.5 ~ E * 0.8 E * 0.5 ~ E * 1
I Anylayer core thickness (without copper) 50 ~ 75 50 ~ 100
J Maximum filling via dimple value 15 10
K Minimum spacing between blind via edge to edge Same Net 100 75
L Different Net 170 120
M Minimum buried via drill size 100 75
N Minimum buried via pad size M + 150 M + 130
O Minimum through via drill size 100 75
P Minimum through via pad size O + 150 O + 130
Q Minimum buried via drill size for VOP (Via on pad) 150 100
R Minimum buried via pad size for VOP (Via on pad) Q + 150 Q + 130
S Minimum buried via drill size for VIP (Via in pad) 150 100
T Minimum buried via pad size for VIP (Via in pad) S + 150 S + 130
U Minimum spacing between blind via edge to buried drill hole edge Same Net 125 100
V Different Net 200 150
W Minimum spacing between plugging via and none plugging via 450 380
X Minimum spacing between through hole edge and PADs (Outer layer) (Different Net) 180 150
Y Minimum spacing between blind via center and board edge (Inner layer) 380 330
Z Minimum spacing between blind via center and board edge (Outer layer) (Routed edge) 350 300
Design Rules of Rigid-flex
Symbol Description Standard Advanced
A Through via hole edge to rigid/flex transition ≥0.75 ≥0.5
B NPTH edge to rigid/flex transition ≥1.25 ≥1.0
C-1 Laser via hole edge to rigid/flex transition(Laser to Flex Core) ≥0.75 ≥0.5
C-2 Laser via hole edge to rigid/flex transition ≥0.4 ≥0.3
D Resin flow of rigid/flex transition ≤1.0 ≤0.5
E I/L copper feature edge to rigid/flex transition ≥0.5 ≥0.3
F O/L copper feature edge to rigid/flex transition ≥0.381 ≥0.25