Foreword Electroniccomponentsmostly get smaller now, from original size 1206, 0805, 0603, 0402, 0201 to almost the limit size 01005, the amount ofstained with tinbecome fewer,sothe relativethickness ofthe steel plateis alsoongettingthin,from the most commonly used thickness0.18mmuntil the current thickness0.10mm, but not allcomponentscan reduce the size, lik…