Electronics Forum: because (Page 81 of 443)

ceramic cap cracking

Electronics Forum | Mon Feb 07 04:01:46 EST 2005 | etienne

I see that this problem has been already raised in 1998, but unfortunately at that time the author raising the problem did not feedback whether he solved the problem or not. So this time I would like to ask Dougs, to feedback any solutions to his pro

0402's and Gluing.............

Electronics Forum | Wed Feb 16 16:41:31 EST 2005 | Mrduckmann2000

Pallets will not work in this case because the wonderful designers put 0402's between the legs and all around the legs of the thru-hole connectors. There are 18 thru-hole connectors on this board and 200 - 0402's around them. The 0603's that are al

Problem with conformal coating

Electronics Forum | Wed Feb 23 10:01:00 EST 2005 | frankracine

Dave, Few questions concerning your Umiseal 1B73. To cure your Acrylic coating do you respect specification ( 2Hrs-170degree F) or you go faster than that? What do you use to cure it? Do you have to clean your nozzles each day or each monday beca

Handskin reaction!!

Electronics Forum | Fri Mar 04 07:19:19 EST 2005 | sureguo

I guess it would be the work related reaction as there is many hazardous substance in the SMT process, such heavey metal, flame retardant, which are known for its hazard to enviroment and human health. actually, in our factory, maybe because of lack

White tin pcb, smt production

Electronics Forum | Tue Mar 01 10:21:55 EST 2005 | davef

IPC Plating Committee is presently working on a specification for immersion tin [IPC-4554 Specification for Immersion Tin Plating for Printed Circuit Boards] as a solderable surface finish. Immersion tin is normally deposited at 30 to 60 microinches.

Gold versus HASL finish

Electronics Forum | Tue Mar 15 10:44:42 EST 2005 | jdengler

-If the aperture volume is the same, there will be more solder on the HASL finish joint due to the solder already present on the pad. This difference is not usually enough to cause insufficiant solder volume but will "look different". Sometimes an

Positive Pressure Facility

Electronics Forum | Wed Apr 13 21:04:39 EDT 2005 | pdeuel

We have a controlled pressure facility. When the pressure is set at 0.2 lbs above outside our security doors that open outward do not close by themselvs causing alarms. Our facility remains dusty under and on equipment because of conditions listed on

Immersion silver life span

Electronics Forum | Wed Apr 20 08:06:21 EDT 2005 | davef

We'd reject the boards because: * Vacuum seal is punctured. * HIC is expired. One of the nice things about immersion coatings is that the fab can rework the coating. You cannot do that with other coatings. Finally, every HIC that we investigated c

MYDATA vs ASSEMBLEON

Electronics Forum | Tue May 03 20:57:37 EDT 2005 | smtuser1234

None taken...but if you are comparing Mydata and Assembleon to Universal just because of ease of use you should probably not buy Universal. It's like buying a palm pilot vs a desktop computer. Close in price but one will do a lot more but you will ne

MYDATA vs ASSEMBLEON

Electronics Forum | Wed May 25 02:58:04 EDT 2005 | Jose Luis

Hi Aramis. I don't understood you....Do you think that in this moment, I didn't contact with every provider of every machine...??? I try, because I think that this forum is for this, to collect the experiences of users like me, but, please, don�t do


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