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Controlled Impedence Board
Any demand for accurately controlled impendence will usually necessity use of multiplayer board with internal planes, and limits on the available space for the equipment can call for the use of high density multi-layers.
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| * Layer |
4-16 |
| * Base Matterial |
FR-4 |
| * Thickness |
0.8-3.2 |
| * Trace width & spacing |
0.10 |
| * Min. hole size |
0.25 |
| * Surface treatment |
HASL organic coating |
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| * Telecommunication System |
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| * Satellite |
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| * Network System |
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| * High Frequency Computers |
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| * Microwaves |
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