Electronics Forum | Wed Feb 13 09:30:32 EST 2019 | SMTA-Joe
*UPDATE* I decided to modify the experiment slightly by forgoing my attempt to achieve reflow with the component. Instead I applied SN42 paste directly to the pad and attempted reflow of the paste by itself. The end result is as follows: Hotplate
Electronics Forum | Wed Feb 13 10:39:36 EST 2019 | spitkis2
The QFN will add an insignificant amount of thermal mass since its all in the housing. You just need to make sure the package does not exceed the recommended peak and duration so as not to damage the die internally. Usually the limit is around 250-
Electronics Forum | Wed Feb 13 10:53:58 EST 2019 | pace_worldwide
The TF2800 features a much more powerful 1900W bottom-side preheater which incorporates 7 independently activated (via software) IR emitters. The preheater is also height adjustable to allow it to get closer to the pcb to provide more aggressive ther
Electronics Forum | Tue Feb 12 11:26:31 EST 2019 | aldrich17
Does anyone have any info. on an "E869" error code on a Phillips Topaz X SMT machine. Error screen shows "Nozzle down limit sensor is off in A-table YV100X:N2323 YV100XT:n2223 Please check sensor and remove to the cause of this sensor being off.
Electronics Forum | Tue Feb 12 12:32:45 EST 2019 | aldrich17
Your response is helpful to a point. But unfortunately i can not confirm where the sensor is as i do not know what the A-table is. But i have checked sensors that i know of and one was not giving off a signal and fixed that issue. But now i am experi
Electronics Forum | Wed Feb 13 14:15:06 EST 2019 | slthomas
I don't see any attachments.....? Are the fiducials consistently well finished (perfectly round, shiny without splotches or other imperfections), or do they vary in quality? When you do a fid offset, is the correction consistent or do you get varie
Electronics Forum | Wed Feb 13 15:12:09 EST 2019 | slthomas
The reason I asked about using X-Y data (originated from the pcb files) is that if you bombsite the locations with the camera and program or adjust them individually, you run the risk of having to do it over and over when fiducials change, your fixtu
Electronics Forum | Fri Feb 15 15:37:35 EST 2019 | emeto
Hello, I have a capacitor that doesn't form intermetallic joint with SAC 305 solder paste.The board is ENIG. Solder melts and forms good intermetallic joint with the PCB finish. However, capacitor can be removed with physical force - it looks like a
Electronics Forum | Tue Feb 19 13:00:25 EST 2019 | slthomas
Everything rob said makes perfect sense. That said, do you have a robust, infallible paste management system? ;) Have you tried multiple tubes and multiple date codes of paste and had the same results? Is it stored properly (on the tip, assuming i
Electronics Forum | Sat Feb 16 07:21:17 EST 2019 | SMTA-Joe
I am experiencing a "tarnishing" issue on PWB traces that may be causing problems with component reflow. The PWB traces are made to the following spec: SOLDER MASK OVER BARE COPPPER WITH SILVER IMMERSION PLATING PER IPC4553, PLATING TO BE 8-12 MIC
