Material build-up
FR4 and thin glass
| TECHNICAL DATA ON MATERIALS |
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| "ROGERS 4000" (4350B, 4450B) |
HF-Epoxi Materials (IS620, N400013SI, PLC621, Megtron 5, etc.) |
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| Er | 3.5 | 3.5 – 3.7 | |
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| Tg | > 280 | 180 | |
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| CTE (x,y) | 17 – 19 | 12 – 14 | |
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| 8 – 10 x FR4 (standard) | 2 – 4 x FR4 (standard) | ||
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High quality epoxy materials (FR408, N-4000-13, PCLGI-180, etc.) |
SpeedLam/ChipLam (Thin glass laminate) |
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| Er | 3.7 - 3.9 | 4.8 | |
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| Tg | 180 | 190 | |
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| CTE (x,y) | 12 – 16 | 5 – 7 | |
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| 1.5 – 3 x FR4 (standard) | on request | ||
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