New Equipment | Solder Materials
SN100C is a lead-free solder alloy developed by Nihon Superior in Japan that is comprised of tin-copper-nickel + germanium. SN100C offers user-friendly properties and has been proven in commercial production since 1999. The result of these advantages
New Equipment | Solder Materials
SAC305 is a lead-free alloy that contains 96.5 % tin, 3% silver, and 0.5% copper. This alloy falls under the JEIDA recommendation for lead-free soldering. When used in wave soldering, AIM’s SAC305 bar solder offers far superior fluidity as compared t
Electronics Forum | Wed Sep 27 08:28:05 EDT 2006 | AR
Hi all All you wave soldering people, have you had any trouble in keeping the copper level of your SAC solder pots under control? How do you combat the gradual rise of copper contents owing to dissolution from through-hole component leads etc.?
Electronics Forum | Wed Aug 09 16:30:43 EDT 2000 | MarkS
Has anyone had (successful) experience placing testpoint vias under BGAs? We already have conventional vias, but we're contemplating converting them into testpoints (probably by enlarging the bottom-side copper diameter to .036" and opening the bott
Industry News | 2011-08-18 21:23:09.0
For an industry that is constantly advancing, the technical conference at IPC Midwest Conference & Exhibition on September 21–22, in Schaumburg, Ill., will feature five sessions offering the latest research, methodologies and insights from industry experts to address critical challenges of manufacturing defect-free, quality electronics.
Industry News | 2011-08-18 21:24:08.0
For an industry that is constantly advancing, the technical conference at IPC Midwest Conference & Exhibition on September 21–22, in Schaumburg, Ill., will feature five sessions offering the latest research, methodologies and insights from industry experts to address critical challenges of manufacturing defect-free, quality electronics.
Technical Library | 2013-02-08 22:56:47.0
Solder voiding is present in the majority solder joints and is generally accepted when the voids are small and the total void content is minimal. X-ray methods are the predominate method for solder void analysis but this method can be quite subjective for non grid array components due to the two dimensional aspects of X-ray images and software limitations. A novel method of making a copper "sandwich" to simulate under lead and under component environs during reflow has been developed and is discussed in detail. This method has enabled quantitative solder paste void analysis for lead free and specialty paste development and process refinement. Profile and paste storage effects on voiding are discussed. Additionally an optimal design and material selection from a solder void standpoint for a heat spreader on a BCC (Bumpered Chip Carrier) has been developed and is discussed.
Technical Library | 2023-02-13 19:23:18.0
Spontaneously forming tin whiskers, which emerge unpredictably from pure tin surfaces, have regained prevalence as a topic within the electronics research community. This has resulted from the ROHS-driven conversion to "lead-free" solderable finish processes. Intrinsic stresses (and/or gradients) in plated films are considered to be a primary driving force behind the growth of tin whiskers. This paper compares the formation of tin whiskers on nanocrystalline and conventional polycrystalline copper deposits. Nanocrystalline copper under-metal deposits were investigated, in terms of their ability to mitigate whisker formation, because of their fine grain size and reduced film stress. Pure tin films were deposited using matte and bright electroplating, electroless plating, and electron beam evaporation. The samples were then subjected to thermal cycling conditions in order to expedite whisker growth. The resultant surface morphologies and whisker formations were evaluated.
Guillotine type V-cut PCB Cutting Machine Product Description 1. For internal strength generates during separation, Minimize it to value under 180uE ,to avoid solder crack or component damage 2. Able to separate edge of V-slot, minimum distance to
Teaching video on PCB through hole repair. BEST instructors teach the method for repair of a damaged eyelet using a multitude of different close up and angled views. Repair is completed per the IPC 7721 instructions. http://www.solder.net
SMTnet Express, May 12, 2022, Subscribers: 25,588, Companies: 11,569, Users: 27,213 Electronics Manufacturing Technical Articles Filling of Microvias and Through Holes by Electrolytic Copper Plating –Current Status and Future
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-selection-guide
(Restriction of Hazardous Substances) directive and sometimes it is a corporate directive. Some applications that fall under the RoHS directive are exempt from being lead-free because the reflow temperature requirements can only be met with high-lead solder alloys which are exempt under RoHS regulation
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/06/Optimizing-Reflowed-Solder-TIM-sTIMs-Processes-for-Emerging-Heterogeneous.pdf
Packaging 22.4 (1999): 592-601 [12] Mokhtari, Omid, et al. "Characterization of tin-oxides and tin-formate crystals obtained from SnAgCu solder alloy under formic acid vapor." New Journal of Chemistry 43.26 (2019): 10227-10231. [13] Martin, Schmeiber
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