Electronics Forum | Fri Feb 08 15:23:53 EST 2013 | spitkis2
Anyone know the placement force value (in lbs, kg, or N) on your PnP equipment when placing QFN or Wafer Level CSP's? Is this a parameter you would program for an individual component that is determined to be sensitive / fragile or do you use the
Electronics Forum | Fri Feb 08 15:50:49 EST 2013 | emeto
We usually run QFNs with 2N placement force. However for some parts we will modify the placement to higher value to make sure they stick to the paste good.
Electronics Forum | Wed Feb 20 11:32:41 EST 2013 | emeto
Hi, in my case 2N is the minimal force I can use, so I will use it for most of the QFN we place.
Electronics Forum | Sun Feb 10 11:11:53 EST 2013 | davef
Try Manncorp and APS. I'm not sure that either one will meet your 01005 requirement. BR, davef
Electronics Forum | Wed Feb 13 02:30:24 EST 2013 | Poul
Well the Assembleon AX201 could be a good choice in your case. Good hunting for new system /poul
Electronics Forum | Mon Feb 11 10:00:20 EST 2013 | bobpan
When they made those feeders....there were no 0402 parts. If you are trying to place 0402 parts....buy new feeders made for them.
Electronics Forum | Mon Feb 11 11:45:30 EST 2013 | bobpan
I dont know where you got your feeders at. I have worked on alot of quad feeders and i have never had one that wasnt repeatable enough for 0805 or 1206 parts.
Electronics Forum | Mon Feb 11 18:17:48 EST 2013 | marcelorotofrance
I have disassembled and cleaned the most of the feeders indeed. This gave me some improvement on some units. Thanks for the data, sir.
Electronics Forum | Mon Feb 11 04:53:13 EST 2013 | ngineer
I'd like some recommendations on the type / size of quad fiducials to use. I started with a small + on the silkscreen layer, but i think that a via is better, and have been using it. Now i'm considering a round smd pad, but not sure the size. Any
Electronics Forum | Thu Feb 14 11:30:04 EST 2013 | davef
Yeh, I love the idea of tankless, but ... Tell ya what, when I'm at IPC APEX next week, I'll poke around on using tankless in a mid-to-low volume plant. BR, davef
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