Electronics Forum | Mon Jun 07 16:45:57 EDT 1999 | Dave F
| I was wondering what measurements are used to define pitch? | Frank: John's correct with the most common definition, but there can be others, depending on your perspective. TTYL Dave F Pitch. The center-to-center spacing between the (1) leads
Electronics Forum | Fri Jun 25 18:33:45 EDT 2004 | jsloot
We are doing what I believe is unique from everyone else. We are using a .010 thick flex circuit board populated with the usual components, sot-23, caps, resistors,etc. It is mountd to a carrier plate with the edges taped down but I am having troubl
Electronics Forum | Tue Jul 11 10:13:22 EDT 2006 | SWAG
Over time, you might see problems with delam., blistering and warpage if using FR4 carriers. Depending on volumes, you might consider using durostone or some robust material like that for the production runs. Keep in mind that switching materials w
Electronics Forum | Mon Aug 20 10:03:48 EDT 2007 | slthomas
Wow. Never have, never would, but that doesn't mean it couldn't be done. Mostly it just seems impossible to design a carrier clip that could hold both well...more likely it would hold one well and the other poorly, or both poorly. Anyway, is there
Electronics Forum | Fri Apr 18 11:52:25 EDT 2008 | leemeyer
I am looking for some sources for a reuseable thermocouple probe. We do small prototype runs and many times cannot afford to be scrapping boards for profiling. I am looking for a probe that will clamp to a pcb or pcb carrier and allow me to manipulat
Electronics Forum | Tue Feb 03 15:23:21 EST 2009 | gregoryyork
Hi George This is down to the different cure temperatures used during PCB process. No problem with the flux or your settings You should be seeing a waxy greasy oil like substance on the dirtier board. Or the resist has absorbed the flux residues not
Electronics Forum | Mon Oct 02 12:22:46 EDT 2023 | carl_p
Hi, I use this Material, you can get a few different types to work with certain sensors but I've used them for a solid 12 months now for reflowing. I'm using multiple board materials down to 0.4mm & I've had zero issues. https://www.datumalloys.com
Electronics Forum | Tue Oct 03 17:08:31 EDT 2023 | assuredtech
What Is FR4 Substrate Material? FR4, also written as FR-4, is both a name and a standard rating. The name is applied to the fiberglass-reinforced epoxy-laminated sheets used in printed circuit board manufacturing. However, the name also functions as
Electronics Forum | Mon Sep 13 21:18:29 EDT 1999 | Dave F
| Hi, | | Recently encountered missing components problem at the SMT process. | Among 13 chip components from the same part number mounted on the board, only 4 ( located in a same row and next to each other) were missing after post reflow. Checked t
Electronics Forum | Mon Nov 02 17:45:46 EST 1998 | ChrisK
In my experience, solder balls are normally caused by only a few things. In order of likelyhood: 1) Water based fluxes (VOC-Free)not having the water carrier completely dried from the board before going into the solder. I.E, too fast conveyor spee
