Electronics Forum | Sun Feb 18 14:46:11 EST 2001 | CAL
Some key data is needed 1) how often does the HS 50 machines run? 24/7? 2)How many placements are being performed? I know for a fact Siemens Siplace S/F platforms require weekly preventative maintenance. Knowing the sophistication of the HS platform
Electronics Forum | Wed Feb 21 09:44:02 EST 2001 | markkrmp
Bill, Are you recommending the heat range of 95-100F (35-38C)to clean stencils with the Smart Sonic using the 440-RT SMT Detergent? The reason I am asking is were are looking at potentially the Model 2003 to clean our paste stencils and our adhesive
Electronics Forum | Tue Feb 20 04:18:39 EST 2001 | chinaman
Hi everyone if once the exposure time is exceeded the only option is to bake the components. I learned there is an "old spec" for the baking conditions (24h/125C or 192h/40C) and a "new spec" which is the current standard specifying conditions of 4
Electronics Forum | Tue Feb 20 15:39:31 EST 2001 | fmonette
To my knowledge, the 40C was established as the maximum "safe temperature" for all tape and reel packaging. The actual specs may vary somewhat for different types of reel, pocket-tape, cover-tape but you must be concerned with the cover tape adhesive
Electronics Forum | Wed Feb 21 09:01:16 EST 2001 | Donnie
Thanks for the input. We currently have both the Waverider and Kic products in house. We use the WaveRider on all our waves, and the Kic for the ovens. We want to find a product for our ovens that's a little more up to date than the Kic. I'm looking
Electronics Forum | Fri Feb 23 10:24:24 EST 2001 | johnthor
We still build a legacy product with a primitive backplane using silver plated fork terminals for outside world connections. After some 20 years of no problems the fork terminals on raw stock PCBs were black and almost unsolderable. Because of the
Electronics Forum | Thu Mar 01 08:55:35 EST 2001 | Dale Dolan
We are currently reviewing the stencil cleaning process in house, we curently use ISOPROPYL ALCOHOL followed by a rub down with non lint wipe alls ( not good !!).As for drying the screen's, the apertures are blown out with compressed air and left to
Electronics Forum | Fri Mar 02 12:46:32 EST 2001 | billschreiber
Hi Dale, Care should be taken when using compressed air to dry a stencil. Just as high-pressure sprays can bend delicate land mass areas between fine-pitch apertures, so can high-pressure air. In addition, OSHA frowns on the use of high-pressuer a
Electronics Forum | Wed Feb 21 20:01:39 EST 2001 | davef
I�m unclear about the intent of your question, but I�ll take a pass at it regardless. I second the previous poster's commets. [Ya, that's the ticket.] Most chip attach adhesives should not be cured at typical reflow profile temperatures. Check yo
Electronics Forum | Thu Feb 22 09:56:21 EST 2001 | blnorman
An adhesive, is an adhesive, is an adhesive. Yes most will thin when exposed to elevated temperature, but that's only for a short time. As cross-linking starts, viscosity increases. Having made countless numbers of adhesively bonded samples in the
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