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Burn-in & Test Socket Workshop - BiTS Workshop

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Design<strong>in</strong>g Load Boards for<br />

Optimal Performance<br />

Microstrip and Coplanar Effects<br />

▼ Substrate thickness ↓ Impedance ↓<br />

▼ Trace width ↓ Impedance ↑<br />

▼ Permittivity (ε<br />

(ε r ) ↓ Impedance ↑<br />

▼ Trace thickness ↓ Impedance ↑<br />

Coplanar Waveguide Effects<br />

▼ Spac<strong>in</strong>g (pitch) ↓ Impedance ↓<br />

▼ Add<strong>in</strong>g ground plane Impedance ↓<br />

4

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