Industry Directory | Manufacturer
The Future of Electronics is here - With Squink at your Desktop, print and assemble PCBs in minutes instead of weeks for less than a cup of coffee. Go from CAD design to PCB without the pain and cost.
Industry Directory | Manufacturer
Shenzhen Huancheng Automation equipment Co.,ltd (referred to as the "HC"), a High-speed developing enterprise specializing in High Precision Automatic Solder Paste Printer research and development.
New Equipment | Assembly Services
G9 + automatic vision printing machine is a new product for SMT high-end application field, which can perfectly meet the process requirements of 03015, 0.25pich and other fine spacing, high precision and high speed. Introduction to standard function
New Equipment | Test Equipment
Inline 3D SPI, Standard Automatic solder paste inspection system As one of the strongest SMT 3D SPI Manufacuturer in China, we provide you all the different models of online solder paste inspection machine,we have variety of size and models of the
Electronics Forum | Sun Feb 27 13:42:44 EST 2005 | pmdeuel
So true, We had paste flux supplied to us from Alpha metals. It was the same as used in the solder paste. The major problem we noted was the in ability to control the ratio of paste to flux resulting in lots of voids. When we mixed enough to get the
Electronics Forum | Thu Jun 27 23:49:40 EDT 2013 | cedric77
I had a solder paste SAC305 T4, with flux loading of 11.5%. After retrieivng out from fridge(5deg) after 48hrs, the paste turn dry (like dry mud? and after double checking the flux loading it becomes 12.5%. Has anyone ever experience this or any opi
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 | 2012-08-08 17:44:58.0
IPC Recently released, IPC-7527 was the brainchild of Task Group Nordic (TGNordic), IPC’s volunteer standards development group in Scandinavia.
Technical Library | 2016-02-11 18:26:43.0
Although reflow ovens may not have been dramatically changed during the last decade the reflow process changes step by step. With the introduction of lead-free soldering not only operation temperatures increased, but also the chemistry of the solder paste was modified to meet the higher thermal requirements. Miniaturization is a second factor that impacts the reflow process. The density on the assembly is increasing where solder paste deposit volumes decreases due to smaller pad and component dimensions. Pick and place machines can handle more components and to meet this high through put some SMD lines are equipped with dual lane conveyors, doubling solder paste consumption. With the introduction of pin in paste to solder through hole components contamination of the oven increased due to dripping of the paste.
Technical Library | 2020-11-24 23:01:04.0
The miniaturization trend is driving industry to adopting low standoff components or components in cavity. The cost reduction pressure is pushing telecommunication industry to combine assembly of components and electromagnetic shield in one single reflow process. As a result, the flux outgassing/drying is getting very difficult for devices due to poor venting channel. This resulted in insufficiently dried/burnt-off flux residue. For a properly formulated flux, the remaining flux activity posed no issue in a dried flux residue for no-clean process. However, when venting channel is blocked, not only solvents remain, but also activators could not be burnt off. The presence of solvents allows mobility of active ingredients and the associated corrosion, thus poses a major threat to the reliability. In this work, a new halogen-free no-clean SnAgCu solder paste, 33-76-1, has been developed. This solder paste exhibited SIR value above the IPC spec 100 MΩ without any dendrite formation, even with a wet flux residue on the comb pattern. The wet flux residue was caused by covering the comb pattern with 10 mm × 10 mm glass slide during reflow and SIR testing in order to mimic the poorly vented low standoff components. The paste 33-76-1 also showed very good SMT assembly performance, including voiding of QFN and HIP resistance. The wetting ability of paste 33-76-1 was very good under nitrogen. For air reflow, 33-76-1 still matched paste C which is widely accepted by industry for air reflow process. The above good performance on both non-corrosivity with wet flux residue and robust SMT process can only be accomplished through a breakthrough in flux technology.
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Career Center | , | Engineering,Maintenance,Production
Production Planning ~ Supply Chain Management ~ Productivity Management ~ Sub Contracting Management ~ Process Quality Management ~ Process innovation & Lean Mfg ~ Cost efficiency Management ~ Manpower Management ~Multi Skilling & Training, Six Sigma
SMTnet Express, June 11, 2015, Subscribers: 22,861, Members: Companies: 14,392 , Users: 38,338 Solder Paste Stencil Design for Optimal QFN Yield and Reliability B. Gumpert; Lockheed Martin Corporation The use of bottom terminated components (BTC
Fundamentals of Solder Paste Technology Fundamentals of Solder Paste Technology Solder pastes are key materials in surface mount technology (SMT) for assembly of printed circuit boards (PCBs). Introduction of lead-free has placed new demands
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resources/solder-faqs
.” Dry all packing completely prior to use to prevent water coming in contact with the solder paste. Should solder paste be re-refrigerated
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/when-should-a-pad-use-windowpane-paste-mask_topic2600_post10599.html
0.05 mm because the hot solder runs out to the Toe, Heel and Side fillet. But the thermal tab is floating on 0.125 mm of solder. The rule is simple. If the terminal lead pad does not have a Toe, Heel and Side fillet then it requires paste mask reduction so that the final result post reflow oven is about
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