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Aug 29, 2018 | It is recommended that the thickness of the stencil of 0.1mm, the steel mesh should be partially nano-coated. It is best not to dry easily, and the particles are not easy to be too large. I have tried ALLPCB for this kind of BGA in the past and they have done a great job
Aug 20, 2018 | Humiseal 1A33 conformal coating using automated atomized spray Not entirely clear on your question. We don't coat any of our hardware (assemblies are coated prior to hardware installation), so if coating needs to be reworked after this, then hardware removal is needed.
Nov 15, 2017 | IMO – Look into nano-coatings for your stencil and radius all square apertures This should help out with solder paste releasing from the stencil helping with insufficient solder QFN LGA aperture design, try a stencil cut with a few different aperture designs to test. I have had success
Sep 22, 2017 | Just for the sake of passing along the information, the fine grained stencil provided zero improvement over the standard PhD stainless and was not nearly as helpful as the baked-on nano-coating. We probably won't be trying that again unless we go under .5mm pitch and also plan to coat it.
Sep 19, 2017 | adjustments (all of the basics) were going to have any measurable affect. The most effective thing we did with what we had to begin with was optimize the setup with a little better support placement, but ultimately it was a nano-coating that got us over the hump. The only negative effect in using that was that we got a little too much paste in another location (if we had auto SPI I suspect we'd be seeing better than 100% TE) but we think we've solved that problem with a reduction in blade pressure. The next step will be to try a finer grained stencil w/o the coating to see if we can get around adding a
Sep 19, 2017 | the recommendations. 4. Nano coatings. If you need them, then you need them. You should at a minimum be using quality stencil squeegee blades that are coated. This is such an easy thing to do, and it makes a small difference. Sometimes a small difference is all you need to make an iffy print into a good print. I
Sep 7, 2017 | Two magic bullets help us greatly with fine pitch printing: 1) nano coatings (we use a DEK product) YES it really does work 2) temperature control in the printer (AC unit). Of course good quality stencil and proper cleaning of the stencil are important, too. You might consider having a set
Sep 7, 2017 | HI Tsvetan, Can you tell me what material your stencil was fabbed from? I have seen (from different suppliers) references to at least 3 different grain sizes of stainless for laser cut, plus electroformed nickel for laser cut, electroformed nickel, nano coatings, etc.. I'm trying to determine if the advanced materials and coatings are the right solution if all other design parameters are exhausted, or if we have another issue. Thanks!
Sep 7, 2017 | In my experience with similar sized parts, the nano coatings (or what ever your supplier might call them) do help with repeatable paste release. How are you cleaning your stencils? A big red flag to me is that your stencil worked fine for the first run, but had issues on the next. If the apertures
Jun 14, 2017 | believer in "nitrating" or nano-coatings.
Oct 8, 2016 | Conformal coating rework jumpers A friend in the contract coating business said: "... ask why the wire is [teflon] coated in the first place, as only the solder joints should be coated in this situation as the flexing/bending of the wires will cause the coating to crack and flake off of the wires. If this were a board that we would be coating, I would only coat the solder joints here."
Sep 20, 2016 | Bubbles formation in conformal coating Hi, Currently we are facing bubble formation in conformal coatings in the pcba. Have varied various specs of the conformal coating machine, even during manual application also having the same issue. the material used is silicone conformal coating. Need possible suggestions to overcome this problem
Jul 9, 2015 | I am looking for the market size for the SMT stencil business in USA. Question: What is the market size for Stainless Steel(PHD vs FG), Nickle, Efab and Nano type stencils in American Continent, in USD. If someone has a reference to see I would like that as well.
May 24, 2015 | The ERR led is flashing on the TSX Nano PLC in our Heller 1088 due to a defective battery in PLC. Has any one got the PLC program I need to reload ? Or is there a way to restart PLC ? is program stored somewhere else in PLC ? many thanks john
Mar 1, 2015 | Thanks Sarason, You are right that chemists and physicists now have some new tricks. Using nano-chemistry the physical properties of the materials change. The melting temperature of our nano-particle silver is below 150C. The insulator is also a nano-ink and delivers on the rigidity and exceeds
Jan 29, 2015 | I agree with SWAG on this. Nano Coatings make a big difference on paste release. I found when placed on the topside of the stencil, it also helps to reduce stencil wear, though others complained that it affected the solder roll, so most stencil houses now apply it to the bottom side. (I didn't have
Jan 27, 2015 | Agree to disagree on Nano Protec. Have you used it and studied the results? We do 3D inspection and clean our stencils in the UT wash on a regular basis. Volume is better and we have to clean on a much lesser frequency when using Nano Protec.
Dec 1, 2014 | Yes nano coating giving the good printing, but the stencil tension is very important for the life, 1st ensure the stencil tension...
Nov 21, 2014 | Use nano-coating and your stencil will last a-hunnit-fiddy-million cycles. Yessur.... In reality I cant say that I have ever seen a worn out stencil. Damaged and dinged, but never worn out.
Nov 13, 2014 | Creating Nano Technologies Inc, Plasma Surface Pretreatment equipment widely used in automobile applications before printing, coating and bonding. Automobile application: 1. Headlamp and tail lamp 2. Car interior part and exterior part ( i.e bumpers, Door Trims) 3. Windshield
Nov 10, 2014 | Dek Nano coating = Snake oil
Nov 3, 2014 | Nano Protec. It really works. Our operators swear by it. Get a sample from DEK and give it a ride on that stencil.
May 28, 2014 | DEK Nano-Protek against Aculon Nanoclear Hello all, I used DEK Nano-Protek and lately I hear about Aculon Nanoclear to be doing exactly the same thing(but with better yields). Did anybody used them both? Can you share your impressions. Anything about Aculon Nanoclear at all?
Jan 24, 2014 | or the placement of the 01005's (or any of the other components). Paste transfer, release and volume is excellent - 85-95% coverage of pad area at the critical 01005 pad sites (3mil foil, Fine Grain Steel with the DEK Nano-Coating). The 01005's are placing (and reflowing) on pad in perfect alignment. So printing
Nov 21, 2013 | Tin Lead Electrodeposited Plating and Conformal Coat Generally, solder connections and leads are conformal coated, unless there is a reason not to coat them.
Oct 18, 2013 | Nano coating = Rain-X = Snake oil
Oct 18, 2013 | Hege, the Nano coating goes on the opposite of the squeegee side of the stencil. I don't know if the cleaning paper is able to remove it little by little with the time, but I never refreshed my stencils with Nano coating and they work just fine. However I don't run big quantity products...
Oct 17, 2013 | But where does it go, that it needs to be refreshed or replenished on the stencil? Does that "just like wax" product wind up in my solder joints, no matter how small the percentage, and would it then qualify as a contaminant? I heard there are some (nano)coatings that are baked on during the production of stencils, and some are wiped onto the stencil by the end user. Those wipe on products I worry about just a little, as in, where does it go that it needs to be replenished on the stencil? I think that bears some thought. Maybe someone with expertise on these coatings can chime in, maybe
Oct 17, 2013 | I've used the Nano Protek product in the past and it is fantastic, worth every penny for those small aperatures. It's just like a wax and yes it works great on rims ;)
Oct 17, 2013 | Hey SWAG, any idea where that Nano Protek goes, that you have to replace it? (and I am not talking about polishing up wheels) Is it being scrubbed off of the stencil during the print process, and over time it must be replenished? Sorry a bit off topic, but your comment had me thinking... (yeah, I
Oct 15, 2013 | See if you can get a sample of Dek's Nano Protek. We use it on all our fine pitch stencils. I'd say it's kind of like car wax for the aperture walls. They operators really like it a bug me every day to order more if we run out.
Sep 26, 2013 | JBC is a great performer, but tips can get a bit expensive. If you are working smaller parts like 0402 and 0201 capacitors, go with the JBC Nano Station. We have 3 stations, each with dual Nano soldering irons. The balance of our stuff is H*kko For more generalized soldering go with Weller
Aug 30, 2013 | coating uv light inspection Contact the coating manufacturer to get their response. We use many different coatings every day and they all glow differently but that has no affect on the coating itself. As stated earlier, it's job is only as an inspection tool to identify where coating is or is not. It has very little bearing
Aug 20, 2013 | Nano coatings ? PAPERS!!! ... We want papers! I believe that Rain-X contains silicone and Nano-ProTek solution does not. I did speak with a field service guy for Nano-Protek and he told me the special coating test pen that they offer is just a sharpie with their logo on it. Thats how I test to see if my stencil coatings are still there and it has worked so far. Also, in my experience, and his, alcohol does not remove the coating. As that was my initial reason for calling. I have only noted a significant improvement to a coated stencil with some fine pitch apertures on thinner stencils (4mil) when we were experiencing insufficient solder
May 2, 2013 | Acrylic comformal coat on PCB we have a Specialty coating system (SCS) precisoncoat spray coating system. we are using an acrylic coating material with about 80cp viscosity. The spraying pressure is around 4-6 psi. The main issue is the finish looking of the board. If we apply high spraying pressure, the coating surface on the board would be roughness (not uniform or smooth). This may be caused by the high spraying pressure. if we drop down the pressure and increase the coating flowrate, the coating thickness on the board is too large to qualify the IPC standard, but the coating surface is very smooth. Do you have any tips
Mar 19, 2013 | Nano coatings ? PAPERS!!! ... We want papers!
Mar 19, 2013 | Nano coatings ? PAPERS!!! ... We want papers! Evtimov, I stand corrected. At the meeting they were talking about nano coated squeegee blades causing the rolling issues.
Mar 18, 2013 | Nano coatings ? PAPERS!!! ... We want papers! The paste is going to roll as before because you have to apply the coating on the bottom side of the stencil. Also the coating that wears out will most probably go to your stencil cleaning paper as that the process wehn you actually have friction with this layer.
Mar 18, 2013 | Nano coatings ? PAPERS!!! ... We want papers! I was at an SMTA meeting Friday. One of the topics of discussion was nano coatings. 1. Nobody wants to talk about where the coating goes as it wears off. 2. There are different types of nano coatings : Chemically bonded which involves a special bonding process and manually applied.(wipes) Some chemically bonded processes use a colored dye so you can see when the coating begins to fail. Claims of 80K + prints were made. Another point: your solder paste roll potentially no longer "rolls"...it skids across the stencil because of the lack of friction. My guess is that you won't be hearing about
Mar 5, 2013 | Nano coatings ? PAPERS!!! ... We want papers! Here is "Compatibility Of Cleaning Agents With Nano-Coated Stencils" David Lober and Mike Bixenman, D.B.A., Kyzen Corporation: http://digital.trafalgarmedia.com/issue/46004/25
Mar 3, 2013 | Nano coatings ? PAPERS!!! ... We want papers!
Mar 3, 2013 | Hello Davef, Can you please share some links to these papers ? BR, Oded.
Feb 25, 2013 | davef, can you ask the companies to post their papers in the technical section and link to them from
Feb 25, 2013 | Nano coatings ? Señor Tech: You're correct. I get the impression that these coatings are aimed at solving specific problems. If you don't have that kind of pain, why get involved?
Feb 25, 2013 | Nano coatings ? Oded: The coatings that I mention serve different purposes. * Antiadhesions seem to be designed to improve paste release from the stencil * Flux repellents seem to be aimed at reducing the under wipe frequency of stencils. At IPC APEX 2013, DEK and Aculon presented papers: * Big Ideas on Miniaturisation, Clive Ashmore, Mark Whitmore & Jeff Schake, DEK Printing Machines Ltd * Low Surface Energy Coatings, Rewrites the Area Ratio Rules, Ricky Bennett, Assembly Process Technologies, Flemington, New Jersey & Eric Hanson, Aculon, San Diego, California My contact at LaserJob is: Eric Moen, Director
Feb 25, 2013 | Nano coatings ? I do not have the warm and fuzzy feel about these coatings due to the lack of supporting data. Aside from trying to save some money on wiper paper I do not see an advantage that would justify it.
Feb 25, 2013 | Hi Davef, The question is which product is better ? Do you know if there is some kind of resea
Feb 22, 2013 | Nano coatings ? I don't know, what you have, but I just got back from the IPC APEX show and I'll make several points: * One take away about 'nano ...' is that it means different things to different people. For instance, in stencil printing: ** DEK uses Aculon and it is a flux repellent ** LaserJob uses Siemens and it is an anti-adhesion ** FCTA uses their own mix that is an anti-adhesion * Next, when I say this, I don't mean to imply anything about anyone, [and particularly about the companies mentioned above that seem to have very good products] but as 'nano ...' becomes more widespread in it's use, I'd be very careful
Feb 22, 2013 | Nano coatings ? I have been told that stencil nano-coatings are rain-x in a different container. I guess I half believed it until I opened up a sample the other day. It smells EXCACTLY like rain-x. For those of you that have never smelled rain-x it has a very distinct odor. It's not easily confused with something
Feb 18, 2013 | Why don't you try some nano-marvel-snake-potion ?