Electronics Forum | Mon Mar 29 14:39:07 EDT 2010 | cab
I am in the market for a solder paste/flux printer. Presco will do the job , but used cost is $10K. Our pitch is 50 mil on PBGA, so requirement is not so demanding. I found an Innovative Machine model MP-200 for less than $5K. Is anyone familiar
Electronics Forum | Wed Apr 14 10:24:17 EDT 2010 | fönsi
Hello Does somebody of you have some experiences with ultrasonic detectors in SMT-Production? Is it possible to test quality of solder joints by using a ultrasonic detector similar to non destrucitve crack inspection tests? Is there a manufacturer fo
Electronics Forum | Wed Apr 14 14:51:10 EDT 2010 | jgalarza
After checking some of our stencil data for the correct aspect ratio I found that a few are wrong. I would like to change them from 5mil thk to 4mil thk but do not know how much paste volume I need to keep. We are using 0201,0402, and BGA with 0.80 p
Electronics Forum | Thu Apr 15 10:05:26 EDT 2010 | davef
Why not use the same paste volume as you currently use? Alternately, although we haven't used it in a while, doesn't IPC have a very nice paste volume, aperture calculator that could be used for this? Or is it just a pad size calculator used for
Electronics Forum | Fri Apr 16 13:22:48 EDT 2010 | stepheniii
Have you tried running a few bare boards through the oven? If there is no flux on them and you still get the "stains" then I think you can eliminate the flux as the cuprit. And I've been told that white is the second most difficult solder mask colou
Electronics Forum | Fri Apr 30 00:20:33 EDT 2010 | sudhir14
We are using QP fuzi m/c during the placement of comp. PCB is fixed & placement head is movable This component is placed at last but still we are getting the problem Comp. is placed with slowest setting also slowest comp. transfer speed of nozzle h
Electronics Forum | Mon May 03 20:54:06 EDT 2010 | aungthura
Thanks Josh for your kind advice. Yes, we have some contacts of Rehm vapor system.However, we didn't know about cost of galden what you mentioned.It is a good point and has been kept as a note and Electrolytics in Vapor phase,too. Hope you can share
Electronics Forum | Tue May 11 10:58:51 EDT 2010 | davef
Paste for dispensing differs significantly from paste for printing. [B Toleno Henkel Loctite]. So, if you compare paste characteristics: Characteristic of paste||Printable ||Dispensable Viscosity [million centipoise]||0.8 to 1||0.2 to 0.4 Metal cont
Electronics Forum | Tue May 11 14:17:55 EDT 2010 | isd_jwendell
Getting the paste from the jar and into the cartridge without entrapping air can be difficult. Can you not just transfer the 500g jar into smaller working jars? This way you can keep the bulk of your paste refrigerated until needed. Air is not your f
Electronics Forum | Thu May 13 01:41:31 EDT 2010 | nrw
Thank you everyone, I realise the problems now and the whole exercise might not be worth the money saved, versus just throwing out the leftover paste. I am based in Australia, so the number of players in this market is small and they know it. The pr
