Technical Library | 2024-04-08 15:46:36.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
Industry News | 2012-08-21 20:28:27.0
SolderLab.comintroduces the SolderLab ROI Calculator – Cost of Rework Calculator.
Industry Directory | Consultant / Service Provider / Distributor / Manufacturer
Asterix Electronics Ltd. is a company dealing with production, design and assembly of printed circuit boards / PCB / hybrid a
Industry News | 2010-03-27 20:30:39.0
Ovation on Booth 1173 at APEX is focused on innovative tools that optimize customers’ print processes to deliver great returns on investment. Taking centre stage is Grid-Lok Gold, the company’s latest fully automatic tooling solution for board and substrate support being launched at APEX 2010. Accompanying is Magna Print, a universal squeegee blade holder and paste deflector system – complete with compelling special APEX offer.
Industry News | 2008-02-29 16:42:42.0
ITASCA, IL � January 7, 2008 � Kester will provide lead-free resources, technologies and products in booth 1660 at the upcoming APEX 2008 exhibition and conference, scheduled to take place April 1-3, 2008, in Los Vegas.
Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
Industry News | 2022-01-24 18:01:46.0
Available component modification services utilizing Hentec/RPS Odyssey RHSD systems include BGA de-balling, gold mitigation, lead tinning and tin whisker mitigation.
Industry News | 2003-04-16 10:58:03.0
Award presented for Palomar's Gold Connection
Industry News | 2011-06-24 18:52:10.0
Vicor Corporation, recently evaluated DEK’s award-winning Nano-ProTek stencil nano coating and has reported excellent results. On a densely populated board with multiple 0402, 0201, BGA and micro-BGA components, Nano-ProTek helped improve CpK and yield.
Industry News | 2016-03-07 20:31:29.0
Viscom today announced plans to introduce a new model of its successful S3088 ultra 3D AOI system family at the IPC APEX EXPO in Las Vegas. The S3088 ultra gold reaches image data rates of up to 3.6 gigapixels per second. The core of this system is the innovative high performance camera module XMplus with its outstanding, high throughput camera technology.
