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Technology
|
2009
|
2010 to 2011
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| Finished Hole Size |
| Mechanical Drill Size |
|
>= 10 mils
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|
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= 8 mils
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|
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| Control Impedence |
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+/- 10%
|
|
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+/- 8%
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|
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| Stack Via (Laser) |
|
Epoxy Filled Vias
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Fill Vias by Plating
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| Materials |
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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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|
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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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|
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| Through/Buried hole Aspect Ratio (Mechanical) |
|
8 : 1
|
|
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10 : 1
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|
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| Blind Hole Aspect Ratio(Laser) |
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0.5 : 1
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|
|
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0.85 : 1
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|
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| Line/Space |
|
4/4 mils
|
|
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3/3 mils
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|
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| Layers |
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14 Layers
|
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20 Layers
|
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