Quality Analysis of Printed Circuit Boards
Printed circuit boards (PCBs) and 1206 sized components were placed in a hot chamber at 255 oC for 2.5 minutes and off-gassing chemicals were trapped by Tenax molecular sieve/ cyrotrap with liquid nitrogen. Chemical identities were determined by gas chromatography/ mass spectrometry. The most striking difference between printed circuit boards (PCBs) was due to a […]