Electronics Forum | Tue Apr 09 16:19:37 EDT 2002 | Peter L.
Has anyone built using the ALIVH PCB (0402, 0.8mm pitch uBGA) on the SMT line? I would like to know any process issues (paste printing, p&p, reflow) related to processing this pcb. Specifically, what type of solder paste was used (no clean) and wha
Electronics Forum | Mon Feb 21 11:34:28 EST 2005 | davef
Assembling boards with 12 pitch are very difficult to control. We like flat surfaces on boards with components below 25 pitch.
Electronics Forum | Tue Feb 22 12:03:32 EST 2005 | russ
You may to reduce a little bit more with HASL. for .4mm pitch and such I would maybe go to a 5 mil with your standards.
Electronics Forum | Thu Oct 29 18:33:18 EDT 2009 | comatose
The top picture probably won't run. You have black soldermask dramatically misregistered and overlapping what look a lot like fids. Either your machines are going to pitch a fit and not find the fid or they're going to center on the soldermask outlin
Electronics Forum | Sun Jun 16 08:00:51 EDT 2013 | zaldytorres
Does anyone have suggestion how to modify radial insertion machine to 3.5mm pitch? I have to insert 3.5mm pitch Ecap but the industry standard radial machine could mount only 2.5 or 5 mm pitch. changing PCB or parts is not an option as it is not appr
Electronics Forum | Mon Feb 21 10:05:33 EST 2005 | Dougs
Our machines can place components down to 16mil, I've never seen any finer pitch components in use, what pitch are they going down to now? 12mil??? What pitches have you been using? We are a contract manufacturer so customers sometimes supply free
Electronics Forum | Tue Feb 22 10:44:12 EST 2005 | Dougs
when you talk about stencil design, what would you recommend for aperture size on fine pitch if the customer insists on hasl finish on fine pitch devices? i usually use a 10% reduction on everything we have been using ( 16mil pitch and upwards and 0
Electronics Forum | Mon Feb 21 18:13:23 EST 2005 | gpaelmo
As davef states above, you would like to have flat surfaces below 25 mil. We are a contract manufacturer also and we've done thousands of 15 mil QFP's with HASL finish with no problems. Your success will depend on quality of PCB supplier providing th
Electronics Forum | Tue May 07 08:18:12 EDT 2002 | Sir Alexandr
Almst quality of PCB with this pitch defined on used boards. Good board produses Fullmarks , look up to it , stencil parametrs isnt so critical but board material and layouts.
Electronics Forum | Mon Mar 04 22:50:03 EST 2002 | Nell
Hi, Could anyone tell me where can I get the 0.4mm pitch CSP Dummy Component and the Test PCB? Any comments will be appreaciated. Thanks and Regards. Nell
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