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Critical parameters of the MILSTD202 Method 208 and MILSTD883 Method 2003 component solderability tests were determined from laboratory experiments. Among the variables examined were steam ager atmosphere, steam ager water quality, component drying, flux quantity, static versus wave pots and...
There is a reliability concern in the larger plastic surface mounting packages which can exhibit cracks from internal stresses during soldering. A lot of ad hoc information has been given to users of such packages about the origins of the problem and its alleviation. The phenomenon is the result...
Solder joint failures in military missile systems and commercial communication products were investigated. The study was initiated after it had been determined that visual PWBA solder defect inspection for external surface attributes of solder joints such as brightness, smoothness, evenness,...
Dynapert Ltd of Colchester have announced the introduction of a new starter package for their production proven MPS318.
Increased use of surface mount ceramic capacitors in wave solder applications has resulted in a number of field failures due to migration of microcracks through the capacitor. Cracks are initiated in board assembly by a number of processes including excessive forces of assembly equipment, board...
Alan Moore has been appointed Lead Engineer at surface mount subcontractors EDMS of Maldon. With extensive knowledge of both surface mount and conventional PCB design and production techniques, Mr Moore takes on responsibility to develop the company's manufacturing systems.
It made a pleasant change to travel a mere 15 miles from base to report on the above twoday event held at The Hospitality Inn, Irvine. Bypassing Troon en route, and glimpsing the vast marquees and stands erected in preparation for the British Open, there was a sense of relief at escaping the...
This paper discusses the microstructures of solder joints and the mechanism of thermal fatigue, which is an important source of failure in electronic devices. The solder joints studied were neareutectic PbSn solder contacts on copper. The microstructure of the joints is described. While the...
Since its early conception, the group has grown from a handful of enthusiastic engineers to the largest trade association in Europe, if not the world, for Surface Mount. As in previous years, SMART will be arranging Seminars, Handson Workshops and Open Forums, giving valuable knowledge for those...
This profile is somewhat more exotic than the usual ones found in this, hopefully, august journal and your reporter would like to dwell on the background more than is usual. If you take your world atlas, you may find Ipoh as an isolated dot in the middle of the Malaysian peninsula, a little to...
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