Introduction
What are the WEEE and RoHS Directives?
How will the Directives affect my company?
Actions for complying with WEEE
Actions for Complying with RoHS
Introduction to lead free
Choosing your materials
Laminates
Solderable finishes
Components
Component finishes
Lead-free solders
Soldering
Hand Soldering
Reflow Soldering
Wave Soldering
Faults
Solder Balling
Tombstoning
Fillet Lifting
Tin Whiskering
Tin Pest
Component failure
Popcorning
PCB warping
Conductive Anodic Filaments
PCB Barrel Cracking
Measling and delamination
Optical Inspection
X-ray inspection
In circuit testing (ICT)
Inspection summary
Lead-free reliability
Factors impacting long term reliability
Testing
General observations
Reliability summary
Further information
How do I raise awareness?
Tools resources and further information
Site map
Lead-Free / Inspection


Inspection

Lead-Free assembly has a significant impact on all stages of the printed circuit board manufacturing and assembly processes. Moving to Lead-Free assembly will also necessitate significant changes in test and inspection methodologies, including optical inspection, X-ray inspection and in-circuit testing. This section gives a brief overview of some of the factors that need to be taken into account and some of the changes that have to be made when performing inspection and testing of Lead-Free assemblies.

Optical inspection

X-ray inspection

In circuit testing (ICT)

Inspection summary