Technology
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2009
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2010 to 2011
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Finished Hole Size |
Mechanical Drill Size |
>= 10 mils
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= 8 mils
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Control Impedence |
+/- 10%
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+/- 8%
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Stack Via (Laser) |
Epoxy Filled Vias
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Fill Vias by Plating
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Materials |
Normal FR4 (Tg 135°C to 170°C)
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Lead-Free FR4 (Tg 150°C to 170°C)
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Halogen-Free FR4 (Tg 150°C to 170°C)
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Microvia Type |
2 + 2 with Buried Hole (Staggered)
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2 + 2 with Buried Hole (Stack-up)
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3 + 3 with Buried Hole (Stack-up)
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Through/Buried hole Aspect Ratio (Mechanical) |
8 : 1
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10 : 1
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Blind Hole Aspect Ratio(Laser) |
0.5 : 1
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0.85 : 1
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Line/Space |
4/4 mils
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3/3 mils
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Layers |
14 Layers
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20 Layers
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