Electronics Forum | Tue Jan 14 11:39:51 EST 2020 | avillaro2020
Thanks Robl. I’ve contacted samtec followed their advice but ended up empty handed. Originally my stencil thickness is 6 mils, samtec stressed the need for the paste and charge to have good contact but this is challenged by the inherent charge non-co
Electronics Forum | Tue Jan 14 17:22:16 EST 2020 | emeto
Avillaro, would you say that vapor phase process was selected, because the boards are so thick and heavy? I would assume so. Have you ever tried to run them through reflow oven? To understand better your challenge, we need to understand the setup be
Electronics Forum | Wed Jan 15 10:31:55 EST 2020 | emeto
Having 10c thermal differential is a lot. Trying different paste might help - usually thermal expansion makes component detach from PCB, then joint is formed and solidified, then component goes back but is too late to form a joint. Cooling speed migh
Electronics Forum | Thu Jan 16 10:07:12 EST 2020 | davef
Hej back at ya Your connectors could be warping during reflow. Find out by putting a connector on a hot plate and increasing the temperature. If so, you might get away with a simple fix of rotating the board 90* on your reflow oven conveyor. If you
Electronics Forum | Mon Jan 20 03:50:37 EST 2020 | falconex_technician
Hi, my company bough second hand pick and place as our second machine. After first transport after start just when initializing, It's showing problem with Z calibration. After second position setup and connect again after month, now showing &
Electronics Forum | Thu Jan 23 12:55:45 EST 2020 | roblackey
Key benefits for us: Labour saving - machine part of SMT line (mainly one product type, 2 shifts), so boards effectively delivered ready for the next stage, with no human interaction. Uniformity of finish - where we had a critical dimension we run
Electronics Forum | Thu Jan 23 12:43:14 EST 2020 | pavel_murtishev
Hello, There is curious PCB technology used for one aluminum LED PCB. First of all there is no solder mask. PCB tracks look grainy and there is no fillet near components. Tracks near components are thicker. A kind of material has been applied to
Electronics Forum | Thu Jan 30 20:10:24 EST 2020 | sarason
Clever idea. I used to work on hybrids. baking temp about 850 degrees C we used titanium and ceramic substrates. the high temp was needed to make the resistance layer partially melt. remove the resitance and you can run at the silver melting point an
Electronics Forum | Thu Jan 23 14:51:33 EST 2020 | jede
I am trying to write a program to pull the feeder location from juki smt files and I am having trouble locating which file this information is located in. Basically what I am trying to accomplish with this program is to automate the set up process w
Electronics Forum | Thu Jan 23 18:34:15 EST 2020 | slthomas
It's hard to poka-yoke loading reels onto the machine (either a inserter-sequencer or a sequencer, then getting the sequenced reels properly indexed). The only way I know of to make sure they've been set up properly is with visual inspection of EVERY
