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Assembly & Placement Defects - Misplaced Lead

Damaged leads or poor coplanarity is unlikely to be a placement machine problem. In the example the end lead is lifted and has probably been caused by poor handling of the devices. This often occurs due to poor packaging of the waffle trays allowing them to twist.

Figure 1: This defect was likely caused by poor handling of the device.

The fault may also be seen due to re-use of parts rejected by the placement machine. Some machines tend to just dump the parts into a bin hence the corner pins are distorted.


Assembly & Placement Defects:

Misplaced Lead

 

© 2007 Trafalgar Publications
Text and photos courtesy of Bob Willis