We analyze PCB (Printed Circuit Board) unit for RoHS compliance without destroying PCB unit, by utilizing element mapping technique by means of fluorescence X-ray.
Direction issued by EU. In the direction, "6 hazardous materials": Cadmium, Lead, Mercury, Hexavalent Chromium, Bromine kind flame retardant (PBB: Polybrominated biphenyl, PBDE: Polybrominated diphenyl ether) are specified, and the usage of relevant material in electrical appliances are banned starting from 2006 July.
"Restriction of Use of Certain Hazardous Substances in Electrical and Electric Equipment"
PCB unit claimed as “RoHS compliance” by vendor.
Identify vendor's latent problem in component procurement or manufacturing control.
If problems are detected, require vendors for corrective actions such as control system improvement.
*Note: In the case that analysis subject includes area invisible from surface (such as Solder ball on BGA), destructive test is additionally required.

XGT5000 (Horiba)

Appearance

Distribution of Sn(red) and Pb (green)

Sn-Pb coexistence (in solder)