Electronics Forum | Wed Jun 18 16:35:28 EDT 2003 | Mark Miles
I am in the process of building a pneumatic paint bomb for the scenario paintball games that I host. What I need is a countdown timer with a red led display which will actuate a solenoid to trip a switch and close a curcuit for 1 second. I will pay t
Electronics Forum | Fri Jun 20 09:38:56 EDT 2003 | caldon
Hi John- First, I do not have first hand experience so my input is pure theory. This type of package (in Some Cases) has a center grounding bonds and leadless legs ups the difficulty tremendously. With no stand-off from the Balls(or Legs) when the so
Electronics Forum | Wed Jul 09 16:18:51 EDT 2003 | Matt Kehoe
Hi Russ, Thanks for the input. The squeeze out we are reworking is very very thin since it has been flattened so it is actually easier to remove than usual but I agree, with a pad this small it could exert a bit of stress on the bond line if rework
Electronics Forum | Thu Jul 10 15:00:58 EDT 2003 | russ
Louis, For whatever it is worth, When I have $5000 parts I don't even mess around with a rework station. I would mask off any heat sensitive components (We use water soluble masking like that for wave soldering) and then process through the oven yo
Electronics Forum | Wed Jul 09 17:07:51 EDT 2003 | msjohnston
Like many others out there I am new to SMT assembly on flex circuits. In the past, we purchased flex assemblies manufactured from a sub-con. Now we will be building internally. Are there any guidelines when building products with flex circuits? Wa
Electronics Forum | Tue Aug 05 08:58:45 EDT 2003 | caldon
Thanks for the update. I did just call Samsung and Mike Foster is indeed there but out on business trip. Seems you have all the scoop needed. As for the machine we had a pure laser vision (I guess you can call laser vision) and it was pretty good. I
Electronics Forum | Tue Aug 05 12:05:15 EDT 2003 | mleber
Through hole question - what methods can be used to obtain upflow on multi layer pwbs with huge ground planes. We are using a water soluble flux with a max temp of 220 topside. I am pushing the limits of the flux and hitting 250 topside in an attempt
Electronics Forum | Fri Aug 08 06:44:33 EDT 2003 | Matt Kehoe
Emergency!!! We have a small run (5) of very dense boards that have an immersion tin finish. They were built in April/May and have a heavy tarnish appearance on them, smd pads and through holes. We are being asked to apply ssd to the surface mount pa
Electronics Forum | Sat Aug 09 12:37:40 EDT 2003 | cyber_wolf
Hello all, I am just curious as to the recovery # people are using on their Fuji chipshooters. One of my co-workers insist that we should run on E-stop. I tell him that we should run on 2 or 3 times and operators should be expected to watch the dump
Electronics Forum | Fri Aug 22 10:20:26 EDT 2003 | Stephen
I hate being persnickity, I just am sometimes. You are not being told you "should expect" that variance. You are being told you can't sue them for manufacturing defects if the balls are within that range. That range is way bigger than what they wil
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