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SMD codes(last update April 2008)
This HTML book is designed to provide an easy means of device identification. It lists3.938device codes in alphabetical order, together with type numbers, device characteristics or equivalents and pinout information.

Causes and Cures of Flipped Component
The resistor is flipped around in the tape during tape indexing, picked up and placed.
A resistor placed up side down, means less insulation distance to tracks under component (only glass coating and solder resist).....

What Causes encapsulated out-gassing (Voiding)?
Voiding is a phenomenon primarily caused by encapsulated out-gassing of solvents.
The voids are often located at non-wetted spots between the solder joint and the pad or component lead. But also flux can be encapsulated in the middle of the solder joint......

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