stencil cleaning

"stencil cleaning" search results in the Electronics Forums



9777 result s found for "stencil cleaning" in the Electronics Forums

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Gold Edge Connector

Mar 16, 2005 | cleaned off by changing the flex, so a replacement flex worked.

Leadfree Dross in Wave Solderpot

Mar 10, 2005 | Euro's....Euro's....ah yes here it is. RoHS, Article 4....shall not contain: Hex Chromium, lead, mercury and Euro's. I heard our sales guys telling a customer tour the other day that we were No Clean, VOC free, lead free and Euro free compliant!

Blue color in solder bath and tinned lead

Mar 10, 2005 | Thank you both for your assistance. I knew that I could count on you folks. The customer has purchased No-Clean flux and is using it as we speak. Hows that for customer service.... All in a days work... Thanks again You make me look good!!! Steve

Omniflo motor

Mar 3, 2005 | The gears should be wet. This gear box acts like a rear end axle. Not sure of the lubricant but it is like a red transission lube, comes in as complete unit from supplier. You can't get the lube from Speedline since it is sold as a complete unit. I would also clean the brushes on the motor

Handskin reaction!!

Feb 22, 2005 | Probably: 1. Laytex reaction 2. Some other exposure at work or home FWIW: Cleaning anything with alcohol sucks. Alcohol toxicity could be your problem, but not like you think (hand contact). Consider inhillation as the exposure point. Work should mandate "Oil of Olay" for this type

Need your help in buying a new PCB cleaning machine.

Feb 13, 2005 | Need your help in buying a new PCB cleaning machine. are capable of removing all flux types (rosin, no-clean, water soluble). Solvent type machines are relatively uncommon in de-fluxing applications due to ever-increasing environmental regulations. Semi-Aqueous (solvent wash, water rinse) processes were popular during the initial phase-out of CDC -based cleaning solvents but today are not common. Today, aqueous represents the conventional wisdom. Aqueous-based chemicals are considered environmentally safe, operator safe, and very effective. These chemicals are widely available from companies such as Aqueous Technologies (my company), Kyzen, Petroferm

Need your help in buying a new PCB cleaning machine.

Feb 12, 2005 | Search the fine SMTnet Archives for previous discussions, while await other replies. Here's an exam

0402's and Gluing.............

Feb 9, 2005 | Technical support cannot help with this issue, especially Electrovert tech support, those guys only know soldering and cleaning machines. Contact Jim Kaler at Camalot Applications Support: 603-641-8666 ex7208 or jkaler@speedlinetech.com

no-clean flux removal

Jan 20, 2005 | I agree with dave here's an example of a previous thread on the subject.

Evaporator for batch washer...

Jan 11, 2005 | Thanks for the suggestions...The unit was just cleaned last week and all the sludge was removed so that shouldnt be it. As for the concentration, im not sure. The only water that has gone into the evap is the rinse water. So im not sure if that could be it either. However, if i was to pull a sample

CSP No clean residue

Dec 8, 2004 | Have been trying to cut through Paste supplier 'Qualification' documents and sales blurb but when as

RoHS Compliance of Chormium coating on connectors

Dec 3, 2004 | Hi Everyone, Could someone please tell me - What happens if a N-type connector having chromate coating over silver plating is hand soldering to a PCB. Does the Chromate coating form a compound with silver, Or does it come off while cleaning excess flux. This is with relation to RoHS compliance

Cap Short

Nov 22, 2004 | On the dendritic growth over the top of the capacitor: We agree that your capacitor supplier probably did not do a very good job of cleaning process residues from their device. On the metallic fragments under the capacitor: This sounds like solder balls, probably from your attachment process. We

RTS (Ramp-to-Spike) and RSS (Ramp-soak-spike)

Nov 2, 2004 | ? Thermal mass or water-soluble/no-clean is the main key to decide RTS or RSS?

Un-cured conformal coating

Oct 27, 2004 | We are producing boards with Alpha 591S RMA No-Clean paste and are coating after SMC with Dow silicone ( toluene solvent based) conformal coating. We have experienced several failures due to soft shorts ( electrochemical migration?) We have also observed areas of uncured material under several ICs

Coating adhesion problems

Sep 20, 2004 | We use Envibar UV 1244 to coat our PCBs after wave soldering. We clean them with alcohol, and then we coate them manually with a brush. Then they are passed through a UV Oven. We have adhesion problems, and we started by looking at the Envibar, but it seems they have no specs to that. What would

Conductive ink protection

Sep 1, 2004 | We have an up coming job that has conductive ink deposits on the solder side of the PCB for contact switches and a zebra strip that connects to an LCD display. My question is... Do these need to be masked to protect them from the wave solder process ? Our process uses OA flux and aqueous cleaning

Solder balls - Pb wave soldering

Aug 12, 2004 | We used fluxes: Cobar 94-QMB (no bismuth), RF800, Cobar94RXZ-M, with foam and spray fluxers: MBO clean alloy SN63PB37.experienced with changing preheatting, speed of covoyer single and double wave., we tried every combination. I think the problem is PCB - it's to adhesive when it's in soldering

If we could bake the Board with OSP finish?

Aug 6, 2004 | OSP has limited elevated temperature exposure capability. Couple that with the fact that solvents (IPA in particular) will remove the OSP. The more material you loose the higher the chances for pad oxidation. We ran an experiment with board washing and determined that one cleaning cycle (alcohol

Ionograph testing

Aug 3, 2004 | thanks for your response. I have a couple of reasons for evaluating this. 1) We recently purchased an ionograph to replace an outdate Omega meter. Correlation is required and in discussing this with several people, most wondered why we checked if we were using no clean. 2)We rarely see failures. I

Micro Dot Paste Dispensing

Jul 30, 2004 | GPD Global provides a line of system to for small volume solder paste and condutive adhesive dispensing know as the MicroMax. Our systems have an accuracy of 0.001" at the needle tip, capability of two valve mountings, integrated closed loop needle calibration, auto needle cleaning, zoom and focus

RFID PCB

Jul 30, 2004 | I was just told by a visitor (PCB Experts) at our company that RFID PCBs should not be built using a no clean solder flux process due to possible reliability issues. This really got my boss going and asked me to look into this. This is the first time I heard of this and I found nothing

Liquid flux dispensing

Jul 28, 2004 | I am looking for a consistent method of applying no clean liquid flux to solder pads. My main concern is if I use a standard air-over type dispenser mounted to an automated arm that the liquid flux will make a mess and not be consistent. I'm not too familur with the other dispensing methods

Un-Reflowed Paste

Jul 26, 2004 | We are seeing un-Reflowed paste along the IC leads. There is only a very small amount imbedded in the flux, typically there is about 10 beads per lead. But on most leads. We are using no-clean Kester 256 paste (Easy Profile)We have not encountered this until this summer. Any Ideas?

Looking for expert opinions, Solderability

Jul 23, 2004 | stripping, copper cleaning, and re-HASL finishing. Thanks to all for the feedback. mk

PCB Cleaning

Jul 9, 2004 | It looks like our max batch size will be 50 boards (approx 5" x 3") and we will run 1 per day. I am

PCB Cleaning

Jul 9, 2004 | This is a shot in the dark for you. On some of our low running boards (5 pieace). Instead of turning

DRY SOLDERNG

Jun 26, 2004 | Are you saying that immediately after the initial assembly process the boards work and then after these same boards sit for 15 days they don't? If that's the case I would suspect contamination maybe. what type of flux are you using and what is your cleaning process if applicable. I don

Use of acetone (67-64-1) in removing flux

Jun 18, 2004 | Out of curiosity, what method did you use? I ask because I have used acetone on a Q-Tip to clean up boards after rework for some time and haven't noticed anything like that. Did you notice it right away? Or after some time went by? I may need to re-consider how I've been doing things. Thanks JD

Type 4 solder paste

Apr 22, 2004 | We used type 4 no clean from Aim too with this application. The price was only about 20 % more than type 3 powder. Works great. They didn't have a long leadtime, my paste was in stock. I have had simalar problems with Indium. They got too big too fast and don't care about us smaller shops anymore.

Type 4 solder paste

Apr 13, 2004 | The problem is T.I. does not want us to use Water Soluable, only No Clean. ALso yes from your other reply we must work for the same company. We build boards and find out later sales quoted a cost that is much less than what we ended spending to build them. Then the owner want to know how come we

Dish Washer for BGA Cleaning

Apr 12, 2004 | We use a dish washer system with good success. The only issue is foaming, sometimes this can be a pr

PCB post reflow cleaning

Mar 30, 2004 | Hi, Thanks for the ideas. With the solder mask curing problems, can you normally wipe off the whi

PCB post reflow cleaning

Mar 29, 2004 | Thanks Josh, email your company name, address and phone No. to

Wave Chain Cleaning

Mar 12, 2004 | We pull our chains and fingers off of our wave and take them down to Carquest autoparts store and ha

Board Cleaning

Feb 24, 2004 | Search the fine SMTnet Archives. There is some wonderful background there. For instance:

Board Cleaning

Feb 24, 2004 | I have been using Isopropyl Alcohol for years using a Right angle spray bottle in a tub without any

screen printer from MPM

Feb 6, 2004 | cleaning but dry or wet? what is difference? what else? thank for help in advance Andrea

Cleaner device for PCB

Feb 1, 2004 | Pete C Thank you for answer. Yes we have to remove solder flux so we need chemistry for no-clean flux residue. What kind of damage can i expact from ultrasonics device? you said damage IC and clock types?. We have all components in solid encapsulation so is it realy problem for ultrasonic I am

Tarnished surface upon cleaning with DI water + saponifier

Dec 22, 2003 | Dave is absolutely right! A question is there free standing DI water left on Parts after wash and r

siplace part missing

Dec 11, 2003 | Thank you Stefan for your help! our machine is hs50.you are right we means components are not placed on board.we can found the part around the loctation.i found bearing is dirty.i clean it with threebond.it can work well. but i want to know the rootcause.is it your saying the little turning

Corrosion

Oct 22, 2003 | Yes Ion Chromatography can when using a isolated extraction system called the C3 tester. Please email me or call of-line and we can show you what we have done for others to not only idendity the flux cleanliness levels but to qualify the cleaning protocol. 765-457-8095 Foresite Inc.

Where to start with a new reflow oven

Oct 21, 2003 | it when doing no-clean. Russ

How to clear the non-clean residue out during soldering

Oct 9, 2003 | Start your recipe development with the recommendations of your paste supplier. The recipe in your n

Corrosion

Oct 6, 2003 | Please help, we have by mistake repaired some boards using the wrong flux (water soluble on a no clean board). Unfortunatly we found out later on while we are testing the boards. The lab anyalysis clearly showed that the flux has eaten through the copper at the failed location. The problem is we

PBGA Replacement

Sep 22, 2003 | and how careful the operator is ... the pads can't take much of the heat exposure and friction forces (if using solder wick for cleaning). Good Luck.

Acqueous Cleaning of RMA Flux

Sep 10, 2003 | Acqueous Cleaning of RMA Flux to the wash water after it is used to clean the boards? Is it discharged or is it reused? If it is discharged, will the discharge be filtered (and to what micron level)? If it is captured and reused (your cleaning system may be equipped with a wash-water recycler), what will you do with the spent wash an evaporator to their cleaning systems. All of the cleaner�s effluent is directed to the evaporator where the majority of the volume is boiled off. The remaining sludge is hauled away as waste. Another alternative to draining is close-looping the entire process. This is only possible (and financially

lets see a show of hands

Aug 14, 2003 | We can solder and clean lead-free in well-controlled and stable processes. We have no reason to believe that products made with lead-free will be reliabile. We know that lead-free soldering is worse for the environment than other less costly processes. While our customers don�t know �lead

Wave Soldering Upflow

Aug 5, 2003 | and emi shields....and solder just fine with our lil pallet system. We Foam the Flux and use no clean chemistry.

Hot Air Knife

Jul 29, 2003 | Copper thieves...great idea...used some just today. How about some details on the wave soldering issues? I bet there are some mega-expert super brain-e-ax on here that would love to share their lifetime learned black art. Or maybe not (kidding). No clean WS or RMA or what....lets go to work.

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Custom Conformal Coating Masks