Electronics Forum: 2up (Page 1 of 2)

MPM Accuflex

Electronics Forum | Sat Oct 04 11:58:09 EDT 2003 | fastek

Dean- I also have (2) UP-1500's with 6.32 software that I was considering upgrading. If you have some insight as to what it takes to get them to 8.xx can we discuss it off-line? Thanks..... Rick fastek@attbi.com

QFP Shifting / Solderability Issue

Electronics Forum | Mon May 28 08:17:25 EDT 2007 | aj

Placement is fine... There are other fine pitch components on the board which are fine. It is a 2up panel - one will be fine and the other might be shifted. Alternates between boards. aj...

Techspray 2108-12S

Electronics Forum | Thu Feb 22 13:09:18 EST 2018 | tey422

I need an estimation of how many cans of Techspray 2108-12S, 12oz aerosol spray I need to coat 50 array panels of 5.25"x7" (2up)FAB for the conformal coating. Need the answer in a hurry.

SMT Carrier Pallets

Electronics Forum | Tue Feb 09 18:53:20 EST 2021 | SMTA-64387083

You'll have to do at least 2up array since most conveyors won't handle boards less than 2in wide. I'm assuming it's FR4 lead free temperature material and PCB's are scored in the panel. The 13-16in lengths aren't a problem other than depaneling. With

Work out number of pallet needed

Electronics Forum | Wed Aug 23 08:08:25 EDT 2006 | aj

There are a few variables that you have to consider : 1. Hours available on Wave Machine ( are other products going thru the same wave) 2. What beat rate are the boards being supplied from previous station?i.e. do you envisage the waveto be a bottl

What caused this reflow issue?

Electronics Forum | Wed Apr 16 11:29:31 EDT 2008 | mmjm_1099

Per Tony SMT Here are more photos: Q15, Q16, Q17 represent good transistors on a 1 up board with the transistor locations that are in question. Q13 is a good transistor on a bad 2up board. Right next to it is Q14 a bad transistor on a bad 2 up boa

PCB Panel Warp

Electronics Forum | Thu Jun 25 13:00:41 EDT 1998 | Bill D.

I have a 2-up panel measuring about 8" x 8" with a score for depanel throuch the middle. I see warping after reflow of the panel (bending in/about score line). The board is not framed (i.e., supported) during SMT reflow other than on the conveyor thr

Re: PCB Panel Warp

Electronics Forum | Fri Jun 26 09:35:46 EDT 1998 | David S.

| I have a 2-up panel measuring about 8" x 8" with a score for depanel throuch the middle. I see warping after reflow of the panel (bending in/about score line). The board is not framed (i.e., supported) during SMT reflow other than on the conveyor t

Re: PCB Panel Warp

Electronics Forum | Tue Jun 30 12:06:04 EDT 1998 | Michael Fogel

| | I have a 2-up panel measuring about 8" x 8" with a score for depanel throuch the middle. I see warping after reflow of the panel (bending in/about score line). The board is not framed (i.e., supported) during SMT reflow other than on the conveyor

What caused this reflow issue?

Electronics Forum | Mon Apr 14 13:24:32 EDT 2008 | mmjm_1099

We had an order using a 2up PCB (same manufacturer) with same components and same board layout without any problems. Perfect run. The next order ran on the same day with same paste using same parts, same layout, same profile, but different 2up PCB h

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