Micro-spot Analysis
With LIBS, the laser spot size can be adjusted from several microns to half of a millimeter. Thus, LIBS measurements can be performed on a highly localized area such as one individual lead or solderball on a semiconductor package (left image). Detection of RoHS elements such as Pb, Cd, Cr, and Br is possible (right image) and proper calibration of LIBS intensity with appropriate CRM's allows accurate quantitative analysis.
Analysis of lead content in individual leadframe packages and the solderballs from semiconductors
