Electronics Forum | Sat Jan 07 09:01:53 EST 2023 | venkataramanaiah
Hi, Have been observed the post reflow inductor skew which is weight of 3.50grams. Can we get any get the exact cause for skew and want to know how to check conveyor vibration.
Electronics Forum | Mon Jan 09 12:41:31 EST 2023 | proceng1
Magyart is on the right track. Lots of variables. Can you post a photo of the skewed part? But also, is it skewed in the paste before reflow? How many inductors are doing this per board? Lastly, indicate on the photo the direction of travel in the
Electronics Forum | Sat Feb 20 20:24:40 EST 2021 | sync40
Hello Ameen, It is needed a moderate impact bump to generate skew. Even blowing of the fans generally cannot generate serious skew -unless the pads apertures are not suitable for the components size/weight. You can try for yourself. Take a board wi
Electronics Forum | Wed Apr 25 16:35:55 EDT 2001 | Steve
Most of the time, we have very few skewed parts so I feel comfortable about the processes in general. However once in a while, often enough to throw off the first pass yield, we will get a few boards with a lot of skewed parts. By skewed I mean that
Electronics Forum | Tue Apr 24 12:56:39 EDT 2001 | Steve
We are experiencing a fair amount of skewed components, mostly 0805 resistors and capacitors, during the reflow process. We have pretty much ruled out the pick-n-place and have determined that it may be happening because of variables at the paste scr
Electronics Forum | Sun May 23 10:14:14 EDT 1999 | M Cox
| Has anyone had any experience or data using vibration during the reflow process. | We introduced a vibration device attached to the fixed rail on a Vitronics reflow oven. The reason was to prevent skewing on large PLCC devices. The process worked v
Electronics Forum | Sun Apr 20 08:27:21 EDT 2003 | davef
Your link doesn�t work. It gives an application timed out message. Pads on the board that are too large or spaced improperly for the component usually cause skewing. Tombstoning and skewing are first cousins. Look here: http://www.smtinfocus.com
Electronics Forum | Tue Sep 23 23:19:34 EDT 2003 | RLW
If you have a board that you've run several times, now you run it and like before all settings are the same, but now you have 0603's randomly skewed or an inch or so away from their intended pad (as if popped up in the air), or an occasional 7343 cap
Electronics Forum | Fri Jun 23 11:49:29 EDT 2000 | Big H
Is it just like that "smart" golf ball - where you tell it, "stop!!! stop!!!" ....or "go further!" go further! So this smart solder, you can tell it "don't skip!! don't skew!!"
Electronics Forum | Fri Jul 06 18:22:51 EDT 2001 | davef
Oooo, you are waving 0402. Tell us more about your wave and its set-up. Never seen this [knock on wood]. When is this skewing occurring, after placement or during cure? What�s the distribution? What happens when you slow-down yer placement rate?
