| || Quality experiences in aerospace electronic assembly
Author : Rama Murthy, P. B. V.;Prasad, Rajendra
Source : Defence Science Journal ; Vol:56(1) ; 2006 ; pp 81-86
Subject : 629.7 Aeronautics
Keywords : Good quality practices;PCB testing;Three tray method;Eye pieceless stereo zoom microscope;Inspection;Visual testing;Electronic assembly;Test and evaluation
Abstract : Quality of the electronic assembly depends largely on good quality practices (GQP) adopted during the process of electronic assembly. Quality experiences gained during working at the defence and space laboratories have been used to develop good quality practices such as three- tray method for cleaning of PCBs, use of grommets for cable routing, use of eye-pieceless stereo zoom microscope for visual testing/inspection, pre-tinning of components, desiccators for storage, potting prior to conformal coating, continuity and isolation checks, de-golding of leads prior to soldering, and use of flux-cored solder wire. The paper also discusses how and why these good quality practices were evolved.