Manufacturing and Reliability Challenges With QFN - American ...
Manufacturing and Reliability Challenges With QFN - American ...
Manufacturing and Reliability Challenges With QFN - American ...
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Manufacturability: <strong>QFN</strong> Joint Inspection<br />
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A large convex fillet is often an indication of issues<br />
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Poor wetting under the <strong>QFN</strong><br />
Tilting due to excessive solder paste under the thermal pad<br />
Elevated solder surface tension, from insufficient solder paste<br />
under the thermal pad, pulling the package down<br />
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