stencil cleaning

9863 result s found for "stencil cleaning" in the Electronics Forums

Component stencils

Feb 16, 2004 | Have you thought about ssd? Boards already have the paste on them when they come in. www.sipad.net

LGA design

Feb 11, 2004 | I'm looking for input from anyone who has experience assembling the LGA package on PCBs. Design, stencil opening, or other requirements are welcoming

Printing paste through screeen mesh versus stencil

Feb 5, 2004 | Yep, did that for many years in the 80's and early 90's. I wonder if their are suppliers that sti

TOOL MANAGEMENT

Jan 5, 2004 | Check this thread for background on stencil life: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=6510

TOOL MANAGEMENT

Jan 5, 2004 | Dear Dave, Whether U have conducted any study on lifetime of the stencil.We also wnated to conduct the study.Can U give some gudelines?

TOOL MANAGEMENT

Jan 5, 2004 | We consider stencils to be 'tools'. That way, we take steps to make sure they are available, when we start a build that requires them.

Stencil Printers

Dec 18, 2003 | Hi Grant, I have experience with both MPM and DEK and can say both are excellent. I am cu

Stencil Printers

Dec 10, 2003 | Dear Mr. Petty: I woould welcome the opportunity of discussing your application requirements in grea

Stencil Printers

Dec 4, 2003 | I think Ekra is a good option, is very easy machine to use and is not over saturated of wires, joint

Stencil Printers

Dec 3, 2003 | For half the money you can pick up a used Dek 265 GSX which are extremely reliable printers and Dek

Stencil Printers

Dec 3, 2003 | Hi, Each people will have diff idea. If you ask me... with that $90k in hand you can get a used M

Stencil Printers

Dec 3, 2003 | $90K is a good budget. Check out Dek and MPM. www.dek.com www.speedlinetechnologies.com/about/abo

Reflowing a PowerPak SO-8

Nov 5, 2003 | You might want to try reducing your stencil aperture by 10% first off; if it still swims try using a home plate design. Also if your profile is going into liquidous to fast, this might cause the swimming as well, check your profile.

Printing for 0402

Oct 27, 2003 | We're just now beginning to see 0402's in our designs. Can anyone make recommendations on stencil/aperture designs and print parameters? I'm seeing skips on a small number of joints on these parts. Thanks in advance, John

SMT Quick Frame Adapter

Oct 23, 2003 | Does anybody know where I can find an SMT 20 x 20 Quick Frame Stencil Adapter???? I've been hunting, and haven't had much luck. Let me know! Thanks!

stencil thickness for bga

Oct 13, 2003 | Aperture size should vary with the component [pitch]. That size should be the same a the pad size.

Where to start with a new reflow oven

Oct 13, 2003 | HI Andrea- to answer Q: 1) Stencils can be order through various vendors that manufacture stencils. You would need to have CAD data for the Stencil company to make them. You design engineer should have the CAD info. Also, the stencil design company can assist in type of apperatures best for your

Mylar sheets

Oct 8, 2003 | K&J Marketing sells a KEPOCH stencil made of polyimide that is cut with a laser. * We have never used them. [We have no relationship nor receive benefit K&J Marketing.] * SMTnet Archives contain threads on them.

lead-free stencil printing

Sep 25, 2003 | There isn't any difference in the printing process regarding leadfree vs. lead. The only differences

BGA vrs CGA....

Sep 19, 2003 | We usually use a pad that is the same size as the ball. And use a stencil thickness of 7+ mils. Why the teardrop? Russ

Printing On Aluminum

Aug 20, 2003 | Hi John- Maybe I am miss reading this but I can not see where a Screen instead of a stencil will benefit you. Is the thinking the screen is plyable enough to contour to the surface?

Stencil Aperture Aspect Ratio

Jul 16, 2003 | pls send me a copy too. thks!

Stencil Aperture Aspect Ratio

Jul 11, 2003 | do you mind sending me the excel file also? 4699j@hotp

Stencil Aperture Aspect Ratio

Jun 30, 2003 | If you would email me your aperature ratio on the excell spreadsheet I would be most grateful Than

Stencil Aperture Reduction - Need Feedback

Jun 27, 2003 | You should be fine. A fifteen percent reduction of these pads will probably improve reliability, de

BGA inspection scope - Visual

Jun 19, 2003 | Mini Micro Stencil sells a mirror for $40.00. This thing is great and is made from metal so it won't break so easy. It is also only .008" thick. minimicrostencil.com

Blocking stencil apertures (on purpose)

May 1, 2003 | Why not fill the apertures with paste and let the paste dry-out? We have found that a hammer and ch

0402 Adhesive Screen Printing

Apr 3, 2003 | 0402 Adhesive printing is possible with thicker stencils in order to allow mixed component technology. We have successfully printed 0402's with a 0.008" thick SS foil. Total material release is not achievable at this thickness, but not required using what is sometimes referred to as a "Pump

WS-709

Apr 1, 2003 | I'm a user changing over from WS-609 to WS-709. WS-709 has less voiding problem and longer stencil life than WS-609. Ws-709 has a less foaming during washing process. Thanks, Myu

0402 Adhesive Screen Printing

Apr 1, 2003 | I've never printed adhesive but I assume that aspect ratio still plays a part with release. Maybe that .006" is just to thick to get good release. Can you step your stencil down from .006" to .004" or .005" for the 0402's?

Rheometric Pump Vs Proflow

Mar 30, 2003 | Yes, I come from a land down under...currently participating in an unnecessary war in IRAQ! But what about paste replenishment on both heads? Wastage? Damage to stencil problems if any? Maintenance? etc... thanks for all your info but I think I need more. regards, Dreamy

Stencil Design for Resistor Net Array 0402

Mar 27, 2003 | In printing,the thickness of solder paste perpendicular to the Squegge direction is always lower 1 m

Rheometric Pump Vs Proflow

Mar 25, 2003 | We are in the process of deciding which stencil printer will we acquire for our line and would like to identify which will provide us more benefit when it comes to enclosed print head. Can anyone give me some comparisons and problems or troubles that they encountered between the two heads? Thanks

Solder paste dispensing

Mar 18, 2003 | I am looking at dispensing solder paste using a Fuji GLV glue dispenser. This is to enable us to produce prototype pcb's without the need to purchase a stencil. Has anybody tried this before? If so what problems should I expect to encounter.

TOMBSTONE DEFECTS

Mar 15, 2003 | Hi, We had tomb-stoning on a product, and it was quite severe. We eliminated it by reducing the amount of solder paste on the small passible component pads. We used a 5 thou stencil, with 20% reduction, and it eliminated the problem. Regards, Grant

Smart Sonic Equipment

Feb 27, 2003 | Anybody using Smart Sonic model 6000 stencil cleaner? We're looking to try one out on the production floor, but I figured I'd see if any one was using it and had horror stories or rave reviews.

Screen printing adhesive

Feb 14, 2003 | We use Thermoset MA-420 on a pair of Elite 6920 printers. Excellent results. It took some experimentation with aperture sizes and stencil thickness but it works great.

Plated through via's in pads.

Feb 10, 2003 | Specify a .1 mm diameter FHS with tolerance of +.3 -.1 using a .15 mm stencil.

0402 stencil design

Feb 5, 2003 | Stephen's correct. Radiased outer corners on 0402 pads really do seem to improve things. We aim to

0402 stencil design

Feb 5, 2003 | Are these the only packages that you could come up with Dave? What about all the rest? You're so

Stenciling chipbonder.....

Jan 23, 2003 | Re: Brews: I'll remember that. Ob. Tech. Reply: #1) No. #2) You're right not to believe t

Stenciling chipbonder.....

Jan 23, 2003 | Yes, my favorite Down Easter beers are: * Casco Bay Pils * DL Geary's Pale Ale * Kennybunkport Ma

Stenciling chipbonder.....

Jan 23, 2003 | There's a Red Hook brewery about 40 minutes south of here. I've taken that tour a few times. Don

Stenciling chipbonder.....

Jan 22, 2003 | Now that's hitting low!!!! "Whatta they stick you for for a 6'er of ESB out there, ol' buddy?" Now

Stenciling chipbonder.....

Jan 22, 2003 | Most of the design considerations will be for the wave soldering of the SMT parts. Have you conside

S.P.O.T.T.

Dec 20, 2002 | Pete, Can you please email me. I need to discuss the Fuji GSP2 stencil printer as one of our potential Asian suppliers is using one and I know nothing about it. Thanks much, MoonMan

Fine pitch paste release problems.

Dec 19, 2002 | Now, this is good solid advice. If following this advice does not help there is something wrong with 1. the paste (reology failure) 2. the stencil (rough walls) 3. the board (bad design or fab) (in order of likelyhood)

Fine pitch paste release problems.

Dec 16, 2002 | square apertures provide better paste release than round in most applications. See IPC 7525 Stencil Design Guidelines

Squeegees for Step-Down stencil

Dec 9, 2002 | Hi I can image too many images for what your product or your process looks like. Think about h

Tombstone's

Nov 6, 2002 | You may want to check your stencil aperture design too. The base ball pad design worked fine to solve my tombstone problem.