New Equipment | Coating Equipment
Cost-effective Solutions for Conformal Coating New cost-effective, automated Conformal Coating System (SimpleCoat TR) with tilt and rotate capability and excellent repeatability for just under $48,000. SimpleCoat basic model without tilt and rotate
New Equipment | Board Handling - Pallets,Carriers,Fixtures
WAVE SOLDER PALLETS, PROCESS CARRIERS, REFLOW FIXTURES, SELECTIVE SOLDER FIXTURES, SURFACE MOUNT CARRIERS, CONFORMAL COATING FIXTURES, ADJUSTABLE FIXTURES, CUSTOM TOOLING AND FIXTURES, MACHINING SERVICES WWW.EMCGTI.COM Check out our FACEBOOK Pa
Electronics Forum | Fri Apr 05 15:24:14 EDT 2019 | sever_83
What can cause solder balls to appear after conformal coating? Using Dymax 9-20557, light curing for 1.5 mins. Can too much heat from light cure cause solder balls?
Electronics Forum | Fri Apr 05 16:31:55 EDT 2019 | slthomas
Never heard of such a thing. Are you sure the coating isn't just making the solder balls more prominent? Where are the "new" solder balls appearing after coating?
Industry News | 2018-08-28 17:04:51.0
IPC – Association Connecting Electronics Industries® in partnership with Surface Mount Technology Association (SMTA) will host the High-Reliability Cleaning and Conformal Coating Conference, November 13–15, at the Chicago Marriott in Schaumburg, Ill. The 2018 conference will focus on electronics assembly and the influence of cleanliness and coating on producing reliable hardware.
Industry News | 2022-04-20 14:11:14.0
Nordson Electronics Solutions offers their latest dispensing, conformal coating, and selective soldering technologies at SMTConnect 2022
Technical Library | 2019-09-24 15:41:53.0
This paper focuses on three different coating material groups which were formulated to operate under high thermal stress and are applied at printed circuit board manufacturing level. While used for principally different applications, these coatings have in common that they can be key to a successful thermal management concept especially in e-mobility and lighting applications. The coatings consist of: Specialty (green transparent) liquid photoimageable solder masks (LPiSM) compatible with long-term thermal storage/stress in excess of 150°C. Combined with the appropriate high-temperature base material, and along with a suitable copper pre-treatment, these solder resists are capable of fulfilling higher thermal demands. In this context, long-term storage tests as well as temperature cycling tests were conducted. Moreover, the effect of various Cu pre-treatment methods on the adhesion of the solder masks was examined following 150, 175 and 200°C ageing processes. For this purpose, test panels were conditioned for 2000 hours at the respective temperatures and were submitted to a cross-cut test every 500 h. Within this test set-up, it was found that a multi-level chemical pre-treatment gives significantly better adhesion results, in particular at 175°C and 200°C, compared with a pre-treatment by brush or pumice brush. Also, breakdown voltage as well as tracking resistance were investigated. For an application in LED technology, the light reflectivity and white colour stability of the printed circuit board are of major importance, especially when high-power LEDs are used which can generate larger amounts of heat. For this reason, a very high coverage power and an intense white colour with high reflectivity values are essential for white solder masks. These "ultra-white" and largely non-yellowing LPiSM need to be able to withstand specific thermal loads, especially in combination with high-power LED lighting applications. The topic of thermal performance of coatings for electronics will also be discussed in view of printed heatsink paste (HSP) and thermal interface paste (TIP) coatings which are used for a growing number of applications. They are processed at the printed circuit board manufacturing level for thermal-coupling and heat-spreading purposes in various thermal management-sensitive fields, especially in the automotive and LED lighting industries. Besides giving an overview of the principle functionality, it will be discussed what makes these ceramic-filled epoxy- or silicone-based materials special compared to using "thermal greases" and "thermal pads" for heat dissipation purposes.
Technical Library | 2017-12-11 22:31:06.0
Typical printed circuit board assemblies (PCBAs) processed by reflow, wave, or selective wave soldering were analysed for typical levels of process related residues, resulting from a specific or combination of soldering process. Typical solder flux residue distribution pattern, composition, and concentration are profiled and reported. Presence of localized flux residues were visualized using a commercial Residue RAT gel test and chemical structure was identified by FT-IR, while the concentration was measured using ion chromatography, and the electrical properties of the extracts were determined by measuring the leak current using a twin platinum electrode setup. Localized extraction of residue was carried out using a commercial C3 extraction system. Results clearly show that the amount and distribution of flux residues are a function of the soldering process, and the level can be reduced by an appropriate cleaning. Selective soldering process generates significantly higher levels of residues compared to the wave and reflow process. For conformal coated PCBAs, the contamination levels generated from the tested wave and selective soldering process are found to be enough to generate blisters under exposure to high humidity levels.
Cost-effective Solutions for Conformal Coating New cost-effective, automated Conformal Coating System (SimpleCoat TR) with tilt and rotate capability and excellent repeatability for just under $48,000. SimpleCoat basic model without tilt and rotate
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 | | | IPC-7711/7721 Specialist (CIS)
The Certified IPC-7711/7721 Specialist (CIS) training focuses on rework of electronic assemblies and repair and modification of printed boards and electronic assemblies.
Training Courses | | | PCB Design Courses
The PCB design courses teach students the process, techniques and tools needed to design layout of printed circuit boards.
SMTnet Express, December 5, 2019, Subscribers: 32,833, Companies: 10,936, Users: 25,393 Masking for Conformal Coatings Credits: ACI Technologies, Inc. Conformal coatings are regularly employed to protect the surface of a soldered printed circuit
Lewis & Clark | http://www.lewis-clark.com/product-category/conformal-coating/
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GPD Global | https://www.gpd-global.com/solder-mask-dispensing.php
to protect components or areas of a PCB during a wave solder process or during conformal coating applications. Solder mask covers locations on a substrate where solder or coating is undesirable
