stencil cleaning

"stencil cleaning" search results in the Electronics Forums



9814 result s found for "stencil cleaning" in the Electronics Forums

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Homebrew Stencil Printer Vision, Completed

Mar 3, 2016 | Really? That would awesome! yes please! If not much trouble for you Thanks!

Homebrew Stencil Printer Vision, Completed

Feb 3, 2016 | Very cool! Love stuff like that.

better Stencil Cleaner?

Oct 26, 2015 | Agree, the recommendation on the Kolb cleaner is a good one.

stencil/printing machines for solder paste

Jun 12, 2015 | Marshall, have you made a decision on the printer? We are also pondering this question.

0402 bridging

Jun 2, 2015 | What is the reduction in aperture size for your stencil versus pad? Or are they at 100%?

Solder climbs on the lead and touches the body of the component

May 12, 2014 | It sounds like a bit too much solder on the PWB, caused by too large a pad for the lead it will contain. In that case solder reduction is the way to move forward. What are the options there? 1. New stencil or stencils - (not desirable) 2. Increase blade pressure at print to reduce solder print stencil, and hand solder that part as a separate process. Stencil change is probably best, but I completely understand not wanting to change them (all) out. Best of luck, let us know how you solve this! 'hege

0201 (0603) stencil spec

May 7, 2014 | cheers guys

Paste printing fine pitch components

Oct 14, 2013 | Thanks for the replies. I have just ordered the IPC Stencil Design Guidelines manual.

QFN PCB Pad no Drain Hole

May 21, 2013 | What size QFN? What stencil design and thickness are you using.

Glue stencil appertures

May 9, 2013 | Thank you! I got it.

Glue stencil appertures

May 9, 2013 | There is a rev B out now.

Small apperture release from stencil

Feb 18, 2013 | No Pete, problems start with very first print.

Small apperture release from stencil

Feb 18, 2013 | Why don't you try some nano-marvel-snake-potion ?

Small apperture release from stencil

Feb 13, 2013 | SAC305

Small apperture release from stencil

Feb 13, 2013 | what type of paste are you using?

Gerber file of Heraeus Benchmarker II

Feb 7, 2013 | Gerber Stencil File for Heraeus Benchmarker II

Stencil cleaner

Jan 24, 2013 | as you know, alcool is extremely flamable, the vapors are hazardous, prolonged contact with skin is

solder paste stencil life

Dec 17, 2012 | Why scrap paste if there is no degradation of performance? Do your own study to determine this.

Blackstone Ultrasonic-CH-2408

Nov 13, 2012 | We have never heard of stencil cleaner calibration requirements.

Dek vs MPM Printers

Oct 2, 2012 | DEK or MPM stencil printers, which manufacturer do you prefer and why?

QFN aligment issues

Jun 29, 2012 | Did you order this stencil? Do the gerbers you have for the board match the actual board?

Stencil aperture positional accuracy

Jun 14, 2012 | Stencil aperture positional accuracy I am running a product with board size ~18"X16". I faced stencil aperture positional accuracy issue which slightly shifted at both end of stencil at positive and negative in X direction thus causing solder paste to pad mis-registration. Due to this solder paste to pad mis-registration, it created several SMT defect as such misplaced, tombstoning and missing SMT component. The question that I would like to consult are: (1)Is this condition normal for board size greater than 15"? As I have observed several stencil that we have on hand at almost similar dimension facing the same issue. (2) What

Auto stencil printer or AOI

May 16, 2012 | Hi DeanM, is the programming difficult?

SMT Stencil Printer Recommendations

Apr 3, 2012 | Go with Horizon03i - very reliable machine

SMT Stencil Printer Recommendations

Mar 8, 2012 | I can offer a refurbished DEK Infinity, build 2003, with 2D

SMT Stencil Printer Recommendations

Feb 22, 2012 | We have 2 mid 2000 EKRA's, no complaints. Great tech support.

Reworking BGA's

Sep 21, 2011 | I would like some input on reworking BGA's and the best method. I have reworked BGA's since 1998 using both micro stencils and just flux dipping the parts. I have reworked SN/PB and lead-free (AIM NC258) BGA's for the last 8 yrs. with just flux. I have not purchased one of those micro stencils in years. I started working at a new place about 3 months ago and here they are reworking BGA's with micro stencils. Is there any positives of using a mini stencil over just flux dipping? I'm told it is necessary and it is the way they have been trained to do it. I personally feel it is a pain in the arse

Nano ProTek Coating

Jul 20, 2011 | I have tried it, and it does what it claims. Don't know about durability yet, tested it on a short run. Cost: $300 for a 10pak (10 stencils) Tested a different stencil with Rain-X applied to it, so far same result, the paste does not clog the fine apertures where we used to have problems. We wipe the stencil underside every 10 PCBs now, compared to every 2 before. Been running >200 PCB over 3 shifts now on Rain-X. No signs of contamination from the stuff. Yes, Rain-X, the stuff you buy at auto shop to treat the windshield so that the rain just rolls off the glass. Cost: ~$6 for 200ml, enough for ~100 stencils... I'm not proposing that other try it, if you do, I'm not responsible for any consequences you may encounter.

Screen Printer Adapters

Jun 29, 2011 | We would be concerned that frame-less stencils are more easily damaged.

patchwork stencil

Jun 23, 2011 | patchwork stencil Leave it to the Eurolanders to come-up with a goofy, confusing name for something simple. Stepped stencils are chemical etched or laser cut. IPC-7525 provides guidelines on designing stepped stencils. Look here http://www.ipc.org/TOC/IPC-7525.pdf Further, we've discussed stepped stencils here on SMT previously. Search the fine SMTnet Archives. Here's an example http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=30572

Equipment to measure stencil tension

Jun 2, 2011 | Things of this nature make us raise an eyebrow. Something along the lines of automatic solder paste

Equipment to measure stencil tension

May 27, 2011 | contact Tom Desistofrom Four Points. They have developed one

Nub bying p&p, stencil printer and reflow.

Apr 20, 2011 | Thank you for good advise:)

Nub bying p&p, stencil printer and reflow.

Apr 19, 2011 | Have you looked at Essemtec for a PnP machine?

Stencil Washer Waste Disposal

Apr 4, 2011 | Hi, Can you let me know the make of the evaporator you use? Thanks, Alan...

IPC/JEDEC standard for solder paste printing defects

Mar 25, 2011 | IPC-7525 Stencil Design Guidelines

PASTE DRYING OUT ON STENCIL

Feb 10, 2011 | Going to do that tomorrow. Thanks for the reply.

solder paste printing

Jan 27, 2011 | How can I print two various heights of solder paste on the same board , no space for graded stencil

Solder Paste Printing to 0.005

Jan 4, 2011 | We've been doing this for over 10 years using flux. We print a tacky flux first using an 0.002 or 0.003" thick stencil, then print paste using a thicker stencil with the underside half etched to keep it away from the flux. In our case, we can't just print paste for everything using a smaller stencil because we're in the high reliability market. Another option would be to dip flux the component. We do have one application using solder paste with a type 5 powder and a 0.002" thick stencil. In that case, we have to use paste instead of flux because the device uses a stud rather than a solder

Best way to ensure max solder load on SOIC w Thermal Pad

Nov 9, 2010 | What's your stencil thickness?

stencil tension measurement

Aug 3, 2010 | For the same reason they would buy a viscometer and an automatic paste mixer.

stencil tension measurement

Aug 2, 2010 | to prevent solder paste printing defects

Fine Pitch Printing Issues

May 20, 2010 | What is the area ratio for the aperture? What size paste are you using? Stencil thickness & aperture size?

Solder briding on QFP

Mar 4, 2010 | Plz tell me Stencil Thickness ? Solder Paste ? Mesh Size ? Partcle size/type? Viscosity?

Stencil Printer?

Dec 18, 2009 | We are currently looking at ones from APS and Essemtec. Any thoughts on these? Thanks, Ryan

Stencil Printer?

Nov 17, 2009 | do Enquiry about EKRA

TQFN Solder Issues (56 contact) ZF

Oct 23, 2009 | use electropolish 5 mils stencil & bonetype aperture

Defluxing Advanced Packages

 Reflow System