stencil cleaning

"stencil cleaning" search results in the Electronics Forums



9815 result s found for "stencil cleaning" in the Electronics Forums

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Dek 265 GSX motor comms failure ...

Mar 20, 2012 | Dear sir, i have face same problem of motor Communication fail Card0,Card1,I Clean Whole card properly, change the battery new one ,reprogrammed mint, but Card 2&Card3 loaded the mint programmed but not in card 0 & card 1, Please suggest what to do

Vitronics XPM2 Question

Jan 6, 2012 | I talked with Vitronics when I first stated seeing it, they were a bit perplexed too. The cooling fins get the same powdery buildup also, I actually see it from the cooling zones all the way to the filters. I'm actually not too concerned as it cleans up quickly, just curious on the reason

PCB Surface Cleaner

Dec 8, 2011 | So you are performing a study on which automatic system to use for dust removal? Provide more details about what you are dealing with. Are these bare pcbs that need cleaning before the build or are they assembled units? It sounds like bare boards. Exactly where is the contamination coming from

PCB Surface Cleaner

Dec 7, 2011 | So are you more concerned with cleaning the board than fixing the issue? Are you employed by the OEM? If so, your main concern should be to eliminate the cause of the contamination which sounds like it's coming from the board house. But if you are looking to get a grade out of it, your

Using isopropanol with DI water for rinsing after washing boards

Nov 14, 2011 | We already have contact with Zestron and we try several chemicals and process (Immersion, aspersion, vapor degreasing). And we always find something under low standoff component. Concerning the flow pressure and shadowing, we try different position in order to improve the cleaning results but we

Tp9 and Tp9 ufp

Oct 27, 2011 | the calibration error sounds like it is an electrical verifier issue. Are you testing parts before you place them? It could be that your centering electrodes are worn or dirty, or it could be the ribbon cables from the centering unit. If you are using the verifier clean it if you are not sure you

Which No Clean for Selective?

Oct 19, 2011 | We also have a pillarhouse jade but opted for Kester 959T. The low solids content allows us to use

Which No Clean for Selective?

Sep 30, 2011 | We are using Kester 985M in our Pillarhouse Jade. We only run SnPb, but this is a newer formulation

Flux not foaming

Sep 21, 2011 | Shenmao SM-816 is alcohol based no-clean liquid flux and can be used in the foam fluxer. http://db.tt/sHkmOOyf If you'd like more info, contact me offline.

choosing the best table top ultrasonic cleaner

Sep 15, 2011 | We are in the process of updating our SMT area and I need to clean my boards. In my research I have found out that if I choose the ultra sonic path I need to make sure the cleaner uses a sweep frequency system in order to protect the SMT parts. Can some one recommed a really good table top model.

Solder Defects in Hast Board

Sep 12, 2011 | Can you post a picture? There are many reasons why they probably don't fill. There needs to be a larger surface area on the ring on top. There could be debris in the via holes from not properly drilled or cleaned before plating process. Your customer wants this because they are testing the boards

Cleaning

Aug 31, 2011 | Non-Hermetically sealed parts are parts are not air tight and gasses and liquids will pass into the

HMP hand soldering.

Aug 24, 2011 | Hi, Thanks for the info. The current process is a standard SMT hand soldering process. The time does not include cleaning, prepping and pre-tinning. Its just the time for the re-flow of one joint itself. We are waiting on some new tips to experiment with. We have also tried various pre-heat temps

Tarnish Occuring after Washing???

Jul 21, 2011 | I am having an recent issue occuring that after I have washed our PCBs using only high pressure DI water heated to approx 150 degrees and then being dried at 120 degrees, the once shiny metallic finish is now becoming a dull tarnished color, it does not come off after spot cleaning either anyone

Water From PCB Dryer

Jan 20, 2011 | I want to ask some advice from you guys how to clean out the water from PCB Dry Oven. The process is firstly wash the PCB and secondly put into the Oven to dry. After drying process,the water was dripping over the floor from the Oven Door and Body. I want the good design to prevent this happening

Has anyone else had failures with Leds made by EOI

Nov 15, 2010 | Has anyone else had failures with Leds from EOI? The part number is EOZ-ZARNCD0-DG. We are using a lead free no clean process using SAC305 solder. These are thru hole parts and our max temp is 244 for 3 seconds. Please if anyone else had issues or has issues, please let me know. Thanks

Soldering contaminated leads?

Oct 5, 2010 | I have seen an increase in components with contaminated leads, mostly SMT parts. They give us solder wetting problems and insufficient solder joints. Our practice is to not use them and return them to the manufacturer. Are these parts solderable? Are there some preperation steps (cleaning

Soldering contaminated leads?

Oct 5, 2010 | I have seen an increase in components with contaminated leads, mostly SMT parts. They give us solder wetting problems and insufficient solder joints. Our practice is to not use them and return them to the manufacturer. Are these parts solderable? Are there some preperation steps (cleaning

Soldering contaminated leads?

Oct 5, 2010 | I have seen an increase in components with contaminated leads, mostly SMT parts. They give us solder wetting problems and insufficient solder joints. Our practice is to not use them and return them to the manufacturer. Are these parts solderable? Are there some preperation steps (cleaning

Maintenance on a Trieber Wave Solder Machine

Sep 29, 2010 | The design of this machine makes it difficult to lift the pump out to clean as often as it probably should be. We are seeing dross on the solder source side of the boards. Does putting wax in the solder pot help reduce the dross? If it does help, where is the best place to put the wax. Is there a

ESD Smocks

Sep 17, 2010 | I suggest you have a look at the method and detergents used during cleaning / washing these smocks. This would help to understand if the smock properties deteriorated on account of such process. In addition, you could keep one unused sample for over 7 months or more and periodically verify ESD

Solder Balls-No Clean Paste

Aug 21, 2010 | I have noticed that the % metal content in the paste can also be directly correlated to solder balls

Solder Balls-No Clean Paste

Aug 20, 2010 | kpm, We were afraid of that, so we have tried several variations with paste usage. New paste, tra

Completed Assembly Storage Life Question

Aug 19, 2010 | We want to complete an end of life build on a leaded no-clean circuit board assembly. I was asked how long the assembly can be stored for future use. Assume it is in a temperature controlled warehouse. Boards will be placed into individual ESD bags folded over and taped shut. Thanks for the help!

Solder Balls-No Clean Paste

Aug 17, 2010 | Are you controlling humidity in your plant? I'm not familiar with that particular paste, but some p

Solder Balls-No Clean Paste

Aug 17, 2010 | Comments are: * Too much paste ... reduce it more. * Do not let a traces run between small discret

MPM UP2000 Squeegee Problem

Jul 30, 2010 | to get a clean and even print. Thanks for any help.

Conformal Coat Masking Tape

May 27, 2010 | adhesive (no silicone) = clean mask lines. Call for a sample.

Help with dewetting

May 25, 2010 | * Silicone oil from adhesives in production. * Soldering process residues * Cleaning bath contamination where rinsing has failed * Operator handling that adds contaminants

di water washing

May 4, 2010 | Only use the shop air if it is clean and dry. I know from experience that one can get water and a little oil from the compressor in the air lines. We are in a drier climate with humidity levels in the 25%-35% range on average. All we do is let the boards air dry over night. If we need to power

Stain on PCB from reflow oven

Apr 15, 2010 | We found stains on the boards come out of reflow oven. The board itself color changed to yellowish from white . We understand discolor soldermask due to high temperature. This can be acceptable by our customer not the stains. The stains look like watermark. We think it is flux. It can’t be cleaned

PCBA Cleaning rags

Mar 31, 2010 | I would not call them rags but would call them lint free wipes. They are 100% cotton twill wipes. Th

vitronics delta 6622 fluxer

Mar 17, 2010 | Hi, we have vitronics delta 6622 in your production.Problem with fluxer starting 3 weeks ago.Fluxer moving, but not spraing????I check flux system , and dont find any problems with machine.Clean the spray nozzle with compressed air , but nothing.may be some of you can help me?Flux is cobar 396 VOC

AQ-400 SMT-400CL pcb Cleaning system

Mar 16, 2010 | Aqueous Technologies would be glad to send you a manual. Product registration is now free. Upon re

AQ-400 SMT-400CL pcb Cleaning system

Mar 12, 2010 | Aqueous Tech has a very reasonable equipment registration program. I think $750 was what we paid.

Mixing No-clean and water soluble processes

Feb 25, 2010 | We use the OM-5100 and wash it with relatively good results. Just dont let it sit longer than a few

Cleaning Copper Surface

Feb 2, 2010 | smt_guy: In removing passivation coats and handling oil, board fabs do light washes with: * Sulfuri

oil contaminated PCB cleaning

Jan 31, 2010 | Questions are: * What kind of oil is this? Where did it come from? * In olden days, we used to po

oil contaminated PCB cleaning

Jan 29, 2010 | We (Industrial Electronics Service Depot) have been using a dishwasher with success on dirty/contami

solder on gold fingers

Jan 22, 2010 | My old boss bought some stuff to clean the lead off of gold fingers. At least that is what he thought it did. What it really did was remove the gold fingers. And quite well I might add. The short answer to your question is no. And if you replate make sure you strip all the metal off first.

Solder briding on QFP

Jan 12, 2010 | Hello Lyn, I am experiencing same scenario. There were flux residues on the board. My solder is a no-clean paste. These units fail only when it undergoes 85 deg C and 85 RH. But during room temp, the functionality is OK. Do you have a report that suggest that a flux can conduct at a hight temp

solder ball problem in manual soldering

Oct 19, 2009 | Hi, We are facing solder ball problem in manual soldering process (between wire and terminal). we are using no-clean solder (63:37)and temperature setting in iron is around 400 Cel. Can any one suggest me how to solve this problem Any thoughts would be appreciated

Mysterious reflow problem

Sep 22, 2009 | . Is this a no-clean or water sol process.

Screens in selective soldering

Jun 25, 2009 | Hello, I want to hear some experience about selective soldering for PCB using nozzle plate and screens Do you have solder defects? bridges and insufficient soldering? How do you combat that? and about the screens you have good quality? What is the frequency of cleaning and changing screens

Thermocouple soldering

Jun 23, 2009 | Are you sure there is any "cleaning" needed? Can you see leftover bits of the teflon remaining? If so, work on it with an Xacto knife. But, most thermocouple wires are VERY hard to solder - as in practically impossible. Many of them have aluminum, nickel or chromium in them, typically hard

Super low volume board wash. Will this work?

May 11, 2009 | Is there any reason a dish washer would not work? Our volume for this is really low ~20 per month. Currently we use contact cleaner and a brush to clean the contacts on a few connectors. I was thinking about going the Ultrasonic route but wondered if a dish washer would work. Any input would

Lead Free Solder Paste Evaluation

Apr 16, 2009 | Sorry for the delay. We are actually pretty busy over here. We have found the Aim 257-2 no-clean sac305 paste offers very little if any voiding and better wetting in lead free terminated devices. My suggestion is contact your local Aim distributor for a sample or call them direct at 1-800-callaim

No-clean, water-based flux residues after wave...

Feb 4, 2009 | Your specification for all PCB suppliers of 'solder mask over bare copper using LPI on external laye

SAFETY GLOVES , GLASSES related to PCB ASSEMBLY

Feb 4, 2009 | Dear Sirs, We are looking for a quality/EHS approved vendor/make/part for safety products - gloves ,glasses for the following applications, 1.SMT Sceen printing Operator. 2.Reflow & Wave Soldering Operator. 3.PCB Cleaning. We would like to get details for the above , if any one could help us would

Defluxing Advanced Packages

Next generation soldering station - Metcal