Electronics Forum | Thu Nov 01 04:32:52 EST 2001 | wbu
Jonathan, we do that all day. We do not use different pastes nor do we glue components nor do we run different profiles. Depends on what is meant by "small components". In our case it�s all that "bird seed" up to SO8. That will work for more parts.
Electronics Forum | Mon Nov 05 04:59:59 EST 2001 | madreindeer
hi, I have found dull joint when I have done trial if boards and cooling too fast.Also with Nitrogen.Some of paste don�t like Nitrogen too much. Also I have seen this when profile is not hot enough or flux haven�t survived to liquidus point. I wou
Electronics Forum | Mon Sep 16 20:26:29 EDT 2002 | davef
Oftimes when I see aggrandizing self-promotional postings like this, I ask Brian at SMTnet.com to: * Delete the posting, explaining why I consider the posting to be inappropriate. * Contact the offending poster and explain proper decorum on SMTnet.co
Electronics Forum | Tue Sep 17 16:14:51 EDT 2002 | bdoyle
Sheriff Doyle reporting for duty. Yes definitely send these type of things to me. That's one of my [many] jobs. Off hand note, I was asked to remove one of the posts here because it wasn't coming out correctly (the internet is like that sometimes)
Electronics Forum | Thu Nov 15 13:46:28 EST 2001 | Terry Burnette
Underfilling PBGA's will increase the PCB level solder joint life by 4x-5x but we only recommend underfill for products going into extreme environments. Normally the 272ld and 388ld PBGA's solder joints when cycled at -40C to +125C should not see any
Electronics Forum | Wed Nov 21 05:21:39 EST 2001 | frha
Thanks Dave! I agree 100% with you and try not to deceive myself! It is very dangerus to let it be a dam paperwork of must. Good id� to change focus frpm process to product-characteristics!! I will see the benefits and cost savings as well as the t
Electronics Forum | Mon Dec 10 09:32:14 EST 2001 | cmay
William, Just to start with, I am no expert, but I have a few books lurking. According to one entry, Surface Mounted resistors stuck to circuit boards had been described in 1952 (Circuit World, Feb edition 1952, page 70) The first mention of a devi
Electronics Forum | Sat Dec 01 09:12:27 EST 2001 | davef
Ah, there�s the rub. So often we see scoring requirements defined based on depth of cut. This ignores that the depth changes with a variety of factors, including: * Wear on the cutting blade. * Variation in thickness of the fabricated board. So, c
Electronics Forum | Tue Dec 11 20:22:33 EST 2001 | mparker
in your example, wool clothing and prairie winter ionization makes sense. Smocks would be an improvement to contain the potential of static build up. If you go to dress codes, then you run the risk of having to provide uniforms or pay a laundry allow
Electronics Forum | Thu Dec 13 19:46:13 EST 2001 | Dave Oggy
The componant details can be found at: http://www.jst-mfg.com/pdfE/eFLZ.pdf its the 21 pin variety I need. I'm sorry but anyone suggesting that I manually do !anything! with this componant has got perfect 20/20 vision along with the soldiering skills