New Equipment | Solder Materials
WS730 is a water-based, high activity liquid flux designed to offer low-spattering and excellent wetting, even to difficult-to-solder parts. WS730 is formulated for a variety of electronic, electrical and industrial applications, including wire, cabl
New Equipment | Assembly Services
TW-HDI PCB 0245 Price: Get Latest Price Minimum Order Quantity: 10 Unit/Units other Port: HK Packaging Details: blister and package Delivery Time: 1 week Payment Terms: L/C,D/P,T/T,Western Union Supply Ability: 5000000 Unit/Units per Year o
Electronics Forum | Wed Sep 15 20:59:23 EDT 2010 | genesan
hi All, Here i snap shot previous PCB(HASL) and current PCB(Immersion Silver).Base on the photo it could be PCB oxidize cause the non wetting?
Electronics Forum | Tue Sep 14 04:00:12 EDT 2010 | genesan
Hi Sir grahamcooper22, There should not a issue in stencil since i had open the aperature 1:1(one to one).Futhemore this is HASL pcb coating as now our customer had convert to immersion silver.I had do comparison between both and found HASL wetting n
Industry News | 2015-11-25 16:58:05.0
On behalf of the SMTA International Technical Committee, we invite you to submit a 300 word abstract of your research for the 2016 SMTA International 2016 technical conference in Rosemont, Illinois. Papers should describe significant results from experiments, emphasize new techniques, and contain technical, economic or appropriate test data. We are looking for papers on a variety of topics related to electronics manufacturing including advanced packaging/components, assembly, business/supply chain, emerging technologies, harsh environment applications, PCB technology, and process control. Materials must be original, unpublished and non-commercial in nature.
Industry News | 2021-01-21 08:09:52.0
Indium Corporation announces that it is now offering CW-232,a uniquely formulated flux-cored wire that combines superior wetting speed and spread with extremely low-spatter performance.
Technical Library | 2015-11-25 14:15:12.0
In this study various printed circuit board surface finishes were evaluated, including: organic solderability preservative (OSP), plasma finish (PF), immersion silver (IAg), electroless nickel / immersion silver (ENIS), electroless nickel / immersion gold hi-phosphorus (ENIG Hi-P), and electroless nickel / electroless palladium / immersion gold (ENEPIG). To verify the performance of PF as a post-treatment option, it was added to IAg, ENIG Hi-P, and ENEPIG to compare with non-treated. A total of nine groups of PCB were evaluated. Each group contains 30 boards, with the exception on ENIS where only 8 boards were available.
Technical Library | 2023-08-04 15:27:30.0
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.
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SMTnet Express, Septemeber 1, 2016, Subscribers: 26,288, Companies: 14,937, Users: 41,025 Reliability Study of Low Silver Alloy Solder Pastes Jennifer Nguyen, David Geiger and Murad Kurwa; Flex (Flextronics International) Sn3.0Ag0.5Cu (SAC305
Imagineering, Inc. | https://www.pcbnet.com/capabilities/assembly/technology-roadmap/
• Inner Layer - 10 oz • Inner Layer - 16 oz Buried/Blind Via 10+N+10 (HDI) Plasma Desmear Yes Outline Tolerance +/-.004 Surface Finish • HASL • ENIG • Immersion Silver • OSP (ENTEK) • Carbon • Immersion Tin • Electrolyic Gold • ENEPIG • ENIPIG Impeadance Control
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-glossary-of-terms
. The possible causes include too short contact time or low soldering temperature. This is evident by poor wetting, a non-smooth surface, and/or a chalky or grainy appearance
