Electronics Forum: /08 (Page 516 of 1615)

BGA Reballing

Electronics Forum | Thu Dec 08 10:50:48 EST 2005 | Gary

Go to http://www.minimicrostencil.com and look up the rb-2000. There is a step by step discription of how to do it and as mentioned before you will need a thicker stencil for your application. there will me a list of stencil types at the web site t

Gold Surface Finish on PCB's

Electronics Forum | Thu Dec 08 22:26:45 EST 2005 | Mike_Kennedy

Dave, Excellent information thank you. What I cant seem to establish is how other manufacturers have found the FLASH gold in terms of reliability especially considering that the flash process is more difficult to control.

Fine Pitch Stencil Design

Electronics Forum | Thu Dec 08 09:47:46 EST 2005 | slthomas

I'm with Grant on the .005" foil thickness. The key is to keep your aspect ratio (aperture width/foil thickness) over 1.5, laser cut, and I like trapezoidal aps. too.

Fine Pitch Stencil Design

Electronics Forum | Thu Dec 08 16:00:12 EST 2005 | chunks

Also the zipper pattern will work too. Samir, why are you calling me a man? Last I checked, the only thing hotter than these double D�s were my behind. That�s how we roll in Cali.

Mis-align Component

Electronics Forum | Thu Dec 08 03:22:34 EST 2005 | khp_armin

Please give mesome guidelines for our pick and place machine (Juki)because we always encounter mis-alignment and missing components.

Mis-align Component

Electronics Forum | Thu Dec 08 16:02:35 EST 2005 | PWH

Not sure how Juki centernests operate but baybe the board thickness is prgrammed wrong and the top board surface is too low or too high (bowed upward). This will cause bad placements. This is an easy mistake to make on HSP.

metal squeegee

Electronics Forum | Thu Dec 08 16:44:18 EST 2005 | eeltec

I am looking for Metal Squeegee blades, 15 7/8" long, angled, for a deHart stencil printer model EL-20. Can you recomend me a good and unexpensive supplier? Thanks Greg

metal squeegee

Electronics Forum | Thu Dec 08 18:52:17 EST 2005 | valuems

Hello Greg I believe a you can get them from JNJ, not sure of the phone number. Try a web site and I know that they have a 1-800 number, so 800 information would find them. Harry

Insufficient Solder Paste

Electronics Forum | Thu Dec 08 22:56:07 EST 2005 | davef

Questions are: * Is the stencil design proper to provide the correct amount of solder paste? * Is the stencil design proper to provide for release of solder paste? * Is solder paste filling the stencil aperatures, prior to separation? * Are stencil a

Inspection Criteria

Electronics Forum | Thu Dec 08 19:18:19 EST 2005 | khp_armin

Please give us some ideas on some critical parameters in checking the solder paste shape, size & volume after Solder Paste Printing.


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