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1996 Electronics Industry Environmental Roadmap - Civil and ...

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Conductor layer<br />

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Conductor layer<br />

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"Prepreg" (glue)<br />

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Conductor layer<br />

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Conductor layer<br />

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"Prepreg" (glue)<br />

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Conductor layer<br />

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Conductor layer<br />

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"Prepreg" (glue)<br />

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Conductor layer<br />

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Conductor layer<br />

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"Prepreg" (glue)<br />

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Conductor layer<br />

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Conductor layer<br />

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Emerging Technologies<br />

Hot laminate all<br />

layers <strong>and</strong> drill<br />

through-holes<br />

Use subtractive,<br />

semi-additive, or<br />

fully additive<br />

methods to<br />

complete through-<br />

hole metallization<br />

<strong>and</strong> surface features<br />

Figure 6-3. Example 10-layer PWB final manufacturing steps. Note that innerlayers<br />

could contain blind or buried vias.<br />

103

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