Electronics Forum | Fri Sep 09 07:55:08 EDT 2005 | davef
This pattern indicates flex cracking due to excessive bending of the board or fixture after soldering. Ceramic is strong in compression, but weak in tension. When bending causes damaged parts, look at: * Board flexes, ceramic is strong in compressio
Electronics Forum | Mon Apr 10 12:54:43 EDT 2006 | cyber_wolf
Is anyone out there using the newer style Fuji feeder calibration jig ? It's the one that has the LCD on it. My current feeder cal jig just measures pick point center. This newer style gauge measures advancing arm height,bend in the advancing arm br
Electronics Forum | Thu May 04 10:29:40 EDT 2006 | Chunks
"Bending nozzles" "Changing dwell times" "Navels" (!!!!!!!!!??????????) And probably not taking responsibility when the poop hits the fan cause "you're just an operator". Not knowing your boards, but estimating your time scenario, I'd say you're sol
Electronics Forum | Thu Apr 12 00:25:25 EDT 2007 | raychamp007
Thanks davef! We found some SOIC & QFP with all leads having toe down problem. The heel fillet unable extend to the mid point outside bend. Do you have solutions for the problem? I have a question: How about the normal gull wing lead which is flat &
Electronics Forum | Tue Feb 19 14:02:56 EST 2008 | scooter
I have done this in a past life. In my mind this is a step backwards. If all of your parts are placed by hand it will work.You will need to cut at the top of the solder to keep the leads form bending If any parts are auto inserted you will need to c
Electronics Forum | Mon Aug 02 08:11:25 EDT 2010 | muarty
Is there a specification in relation to the proximity to features that a Flex circuit should or should not be bent? I am experiencing broken tracks on some flexible circuits which appear to be getting 'flexed' directly adjacent to a soldered joint in
Electronics Forum | Wed Apr 22 10:08:52 EDT 2015 | emeto
I assume you are running Lead paste and that is why your parts are moving during reflow. Most probably these caps have leads that are bended in random directions(look at some parts from the bottom and observe how symmetrical the leads are). In additi
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 | Thu Aug 31 21:59:55 EDT 2000 | Dave F
Yins: So, what kind of gloves do yall (and your operators) use when handling solder paste and used (pasted) stencils? What was the thought behind that decision? Thanks
Electronics Forum | Fri Sep 01 04:21:44 EDT 2000 | G. English
We use a single use, vinyl glove. It is supplied by Ansell Edmont Industrial, it's called 'Duratouch Stretch II' Hope this helps.
