Electronics Forum | Mon Oct 21 15:14:53 EDT 2019 | compit
As you can see in machine B on pins 1-2, the circuit closes - give the button / contact here. The voltage you provide most likely applies to pins 3-4. In my (and in the SMEMA standard) it looks like this:
Electronics Forum | Fri Oct 18 15:29:16 EDT 2019 | kylehunter
Hi all. We are currently trying to build a downstream bypass to have our final conveyor feed into our oven, which doesn't have a SMEMA interface. Right now we have to manually connect the two downstream ready pins by hand. I have a good idea of how I
Electronics Forum | Mon Oct 21 18:24:08 EDT 2019 | dougt
I haven't thought about this in a while, wrote up something on how this works here years ago. I think I remember..... As you know the first machine finishes the board and is "ready to send". It tells the second machine this by connecting pins 3 &
Electronics Forum | Wed Jun 07 21:54:11 EDT 2006 | mumtaz
Ha ha! davef finishes you guys off again!
Electronics Forum | Wed Jun 07 22:02:57 EDT 2006 | davef
Similarly, we have eliminated solder balls by using an aqueous washer.
Electronics Forum | Tue Jun 06 15:45:18 EDT 2006 | slthomas
Yep. What I'm really looking for is the minimum radius of curvature for 63/37, which is a function of it's surface tension. It's physical properties issue, not an agency issue. I've seen some references that I have interpreted to mean that it's some
Electronics Forum | Wed Jun 07 21:45:53 EDT 2006 | davef
We do not understand the question. Take a deep breath, remember not all of us are trained as geologists. The smallest solder ball we've seen is a little less than 5 nm.
Electronics Forum | Thu Jun 08 09:54:07 EDT 2006 | slthomas
Awwww, man. I was looking for something a little less on the anecdotal side for our local municipality's environmental stewards.
Electronics Forum | Thu Jun 01 16:30:05 EDT 2006 | slthomas
Just wondering if anyone knows this off the top of there head. I might be able to figure out the math based on surface tension (this is 63/37 so the data is out there) but I REALLY do not want to put that kind of effort into this. :/ Editing to clar
Electronics Forum | Tue Jun 06 11:57:12 EDT 2006 | Chunks
IPC 610 says acceptable Class 1 (Class 2, 3 indicator) if they are entrapped/encpsulated balls within 0.13mm of lands or pads. or exceed 0.13mm in diameter. Defect Class 1,2,3: Solder ball violates min electrical clearance. Solder balls not entrap
