New Equipment | Solder Materials
NC217 Gel Flux is designed for touch-up and repair work where the flux may spread away from the heat source. NC217 Gel Flux is electrically safe even without a thermal profile. This gel flux dries within one hour of use with or without heat and is t
New Equipment | Wave Soldering
> ◇Windows XP operation software with Chinese and English alternative available, whole machine under integration control can display the failure and save all production data for further analysis. ◇External streamline design and modularized desi
Electronics Forum | Thu Jan 03 08:02:53 EST 2002 | davef
Slump is a function of the particular paste you select and the temperature of the paste. Use a slump test like the one that follows to compare fluxes. Slump Test Step Process activity 1 Print paste on white ceramic substrate or microscope sli
Electronics Forum | Thu Jul 07 18:07:38 EDT 2005 | saragorcos
Ahh. sorry for the foul up - and thanks for stopping the spread of misinformation!! Sarag
Used SMT Equipment | SMT Equipment
Windows XP operation software with English/Chinese version alternative; whole machine under intergration control can display the list of failure and save all production data for further analysis. External streamline design and modularozed design insi
Industry News | 2011-11-03 21:52:00.0
By davef: I was fortunate to be able to attend the SMTAI Exhibition Oct. 18-19, 2011. While I was walking around looking at the booths and talking to the exhibitors, I got this idea that I would report back on things that I found interesting. You know spread the news, since not everyone was there.
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.
Technical Library | 2017-05-17 22:33:43.0
The selective soldering application requires a combination of performance attributes that traditional liquid fluxes designed for wave soldering applications cannot fulfill. First, the flux deposition on the board needs to be carefully controlled. Proper fine tuning of the flux physicochemical characteristics combined with a process optimization are mandatory to strike the right balance between solderability and reliability. However, localization of the flux residue through the drop jet process is not enough to guarantee the expected performance level. The flux needs to be designed to minimize the impact of unavoidable spreading and splashing events.From this perspective a fundamental understanding of the relationships between formulation and reliability is critical. In this application, thermal history of the flux residues (from room temperature to solder liquidus) is a key performance driver. Finally, it is necessary to conduct statistically designed experiments on industrial selective soldering machines in order to map the relationships between flux characteristics and selective process friendliness.
Technical Library | 2020-07-29 20:12:52.0
Aluminum is a metal that it is hard to solder due to the high surface tension difference between it and molten solder alloy. This occurs because aluminum rapidly forms a tenacious oxide layer whenever it is exposed to oxygen in the air. The oxide layer is responsible for the high surface tension difference between the aluminum and the solder and impedes the solder from spreading evenly on an aluminum surface. There are hundreds of aluminum alloys available in the marketplace; it is important to identify the form of aluminum that is being soldered. Once this is done, an appropriate soldering technique can be chosen for soldering the specific aluminum alloy under consideration. Direct aluminum soldering eliminates using expensive plating techniques to prepare the aluminum surface for soldering.
Welcome to this Defect of the Month video on monitoring flux application for wave and selective, this series of videos were produced for and featured as part of the NPL/IPC video library and examples are taken from the NPL Defect Database. Over the l
ALPHA® Preforms with solder paste adds solder volume.
SMTnet Express, May 18, 2017, Subscribers: 30,472, Companies: 10,597, Users: 23,256 How to Use the Right Flux for the Selective Soldering Application Bruno Tolla Ph.D, Denis Jean, Xiang Wei Ph.D; Kester The selective soldering application requires
SMTnet Express, May 10, 2018, Subscribers: 31,023, Companies: 10,930, Users: 24,698 Relative Humidity Dependence of Creep Corrosion on Organic-Acid Flux Soldered Printed Circuit Boards Haley Fu, iNEMI Creep corrosion on printed circuit boards
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% Flux type ROL0 Alloy composition (%) Sn 40Pb Halide content(%) 0.0 Silver chromate paper test No discoloration Solder spread factor
