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Insufficient solder at PLCC

more examples

Description:
Same context as described in the main file. General view with improved lighting.

Causes/Remedy:
  • reflow soldering: insufficient/poor solder paste applied
  • wave soldering: shadow effect


Source: SEM
Insufficient solder at a PLCC - borderline case

Description:
The above example from a different angle. The requirement concerning which a solder fillet has to show at the heel and at the toe, is fulfilled. Borderline case for insufficient solder (Class A) according to IEC 61191 - 2.

Causes/Remedy:
  • reflow soldering: insufficient/poor solder paste applied
  • wave soldering: shadow effect


Source: SEM
Insufficient solder at a PLCC - borderline case
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