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Electronics Forum | Wed May 08 14:24:22 EDT 2013 | wahahasteven
we are using acrylic conformal coating on the PCB. Under the same program, same parameters (not changing anything on the machine), and we always found one or two boards have some spots which are not coated (shown as picture). The location of the spot
Electronics Forum | Thu May 09 10:12:08 EDT 2013 | wahahasteven
this is one of my project. I have tried to remove coating only on those areas with alcohol and thinner, then program the machine to coat the removed area again. But the result obviously shows that two different tones of coating on the board. I also
Industry News | 2022-10-12 11:23:36.0
In the SMT industry, there are many types of cleaning machines. According to the cleaning things, there are stencil cleaner, PCBA cleaner, Wave Oven Pallet/Fixture cleaner, Mis-Print PCB cleaner, Squeegee cleaner, Nozzle cleaner, PCB surface cleaner and so on.
Industry News | 2022-10-12 08:07:17.0
I.C.T Provide SMT Production Line solutions with Automated Optical Inspection (AOI) AOI is short for Automated Optical Inspection, which is widely used in the electronics industry to check the appearance of PCBA assembly at the back end of the circuit board assembly line. The basic principle of AOI is to judge whether the object to be tested meets the standard by comparing whether there is a large difference between the object to be tested and the standard image by using image technology. AOI emits a 4-color light source to the PCBA board, which is automatically scanned by an industrial camera for catastrophic failures, such as missing components or quality defects. Therefore, the quality of AOI depends on the image imaging ability, algorithm parsing ability and image discrimination technology. I.C.T AOI has done well in these aspects.
Technical Library | 2020-03-09 10:50:17.0
A customer called the Helpline seeking advice for cleaning no-clean fluxes prior to applying a conformal coating. The customer's assemblies were manufactured with a no-clean rosin based solder paste (ROL0) and were cleaned with an isopropyl alcohol (IPA) wash. After cleaning, a white residue was sometimes found in areas with high paste concentrations and was interfering with the adhesion of the conformal coating (Figure 1). For conformal coatings to adhere properly, the printed circuit board (PCB) surface must be clean of fluxes and other residues. In addition, ionic contamination left by flux residues can lead to corrosion and dendrite growth, two common causes of electronic opens and shorts. Other residues can lead to unwanted impedance and physical interference with moving parts.
https://www.ascen.ltd/Products/conformal_coating_equipment//579.html PCB conformal coating machine selective coating process for PCBA, PCB coating machine protective coating,to protect the sensitive components: from external environmental factors,vib
I.C.T Provide SMT Production Line solutions with Automated Optical Inspection (AOI) AOI is short for Automated Optical Inspection, which is widely used in the electronics industry to check the appearance of PCBA assembly at the back end of the cir
Career Center | Theni, Tamilnadu India | Engineering
NPI Engineer: • Playing a role as NPI leader of the Telecom, Aerospace & Server Products to introduce and run to qualify the engineering build from customer. • Conducting Weekly NPI meeting with the CFT team to review the progress of the NPI schedu
Career Center | Cavite, Philippines | Engineering,Technical Support
I had 15 years Handling SMT Equipment.
SMTnet Express, October 7, 2021, Subscribers: 26,641, Companies: 11,452, Users: 26,882 Cleaning Before Conformal Coating Cleaning PCBs before conformal coating removes potentially harmful and unknown contaminants from the board
BGA Package Component Reliability After Long-Term Storage BGA Package Component Reliability After Long-Term Storage In 2008, the white paper Component Reliability After Long Term Storage was published in support of shelf life extension
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/industrial-coating-systems/additional-product-sub-type/powder-coating-batch-booths?con=t&page=8
… Efficiency increase and cost reduction with Dense phase technology combined with robot precision Industrial Coating Systems Since 2016 after many years of manual powder coating, the surface finisher
| https://www.smtfactory.com/PCBA-Cleaning-Machine-PCB-Defluxing-For-Best-Coating-and-Bonding-Effect-id43566387.html
. Otherwise the paint will peel off quickly. Conformal coating logic is the same as painting. To make matters worse, the coating is often semi-permeable, and moisture can get in and seep into the flux residue and cause corrosion
