Electronics Forum | Wed Jul 09 14:47:39 EDT 2014 | deanm
I'm looking for a typical SMT placement defect rate from others in the field so I can judge whether or not we are in an acceptable range. If I give you a board with 200 components (0603, 0805, SOICs, 20mil MSOPs, tantalums, DPAKs and a few 20mil fin
Electronics Forum | Fri Sep 24 09:48:28 EDT 1999 | Shane
I am developing a DOE for evaluating SMT adhesives. I would like to evaluate 3 different vendor dispensing adhesives. I currently have the Heraeus PD955M and the Loctite 3609 and 3618 selected for evaluation. I would like to add another manufactur
Electronics Forum | Thu Jul 04 15:29:10 EDT 2024 | chuckphd53
IF YOU KNOW OF OR HAVE AN SMT-XXX MODEL PnP maybe you can help! We have an SMT460, basically a good machine but does have some quirks. I'd like to get a few answers to help solve an SOT23 part placement issue. With High speed camera selected for th
Electronics Forum | Sat Sep 25 09:00:44 EDT 1999 | John
| I am developing a DOE for evaluating SMT adhesives. I would like to evaluate 3 different vendor dispensing adhesives. I currently have the Heraeus PD955M and the Loctite 3609 and 3618 selected for evaluation. I would like to add another manuf
Electronics Forum | Fri Mar 09 14:31:56 EST 2007 | stepheniii
That also allows a channel for degassing and also breaks up paste into sections that tend to balance the forces acting on the part. So basically window paning is even better than you might think.
Electronics Forum | Wed Dec 07 15:54:28 EST 2011 | comando
this bulbs never have been replaced but the image look ok I would like send you a part placement image and i don't know how , if you want send me you e-mail to send the image
Electronics Forum | Thu Aug 22 16:13:47 EDT 2019 | scotceltic
I have to agree with Dave here. Can you compare the datasheet pad recommendations to your design ? It may help to show the forum a picture of the bare PCB pad design along with a pic of the bottom terminations on the part. What Stencil thickness a
Electronics Forum | Wed Oct 26 11:54:31 EDT 2022 | proceng1
To me, it sounds like your axis servo is losing steps. Can you get through the calibration steps? Hanwha is who we use for service. I'd say call them if you don't want to just throw parts at it.
Electronics Forum | Mon Jan 09 12:34:00 EST 2023 | stephendo
Molten metal has a high surface tension. If the pads are uneven you can have uneven forces. Decades ago if part were not placed exactly right, they would come out of the oven centered. (or tombstoned)
Electronics Forum | Fri Jun 02 17:19:56 EDT 2000 | Big K
I am currently experiencing several problems with QFP's on one of our IP3's. The first problem is with QFP240 devices. We are experiencing a high reject rate with these parts when using vision type 100. What appears to happen is that the vision syste
