Electronics Forum | Tue May 20 04:34:59 EDT 2014 | sarason
Well that would be a response from the VME bus. Is the PCBoard, the only controller on the buss, or is there a second controller that talks to interface boards etc. If so you might just have a problem with the second controller. Check the control sig
Electronics Forum | Fri May 23 23:58:48 EDT 2014 | edriansyah
Hi Hege. I was not also too confident with the black pad (coz no black residue on the remaining pad). But based on my search on the internet regarding black pad. Most of them shows a very clean BGA Pad after peel off the BGA as the picture reference
Electronics Forum | Thu May 29 08:17:22 EDT 2014 | emeto
Edri, if the profile is good for this part and everything else on the board looks fine, I would focus all my attention to the part. How is it packaged? How is it handled? Moisture sensitive - prebake if needed.If nothing helps, try another batch or
Electronics Forum | Wed Jun 04 21:11:11 EDT 2014 | isd_jwendell
This style gave me grief as well. The problem is the way the part is manufactured leading to an unusual pad configuration. When the part is placed on the PCB there is no pad wrap under the part, the pad is 90 degrees to the board. The datasheet shows
Electronics Forum | Sun Jun 01 13:25:26 EDT 2014 | davef
Eurolanders and Asians are the primary users of immersion tin. In the US, the use of immersion tin is restricted due to the concern over the thiourea that used in tin plating process. Thiourea is a suspected carcinogen. I’m inclined to say, “aww, as
Electronics Forum | Fri Jun 06 16:25:03 EDT 2014 | spitkis2
Component manufacturers subject their lots to thermal / reflow testing per IPC /JEDEC STD-020. This involves running the parts through an oven 3X with a peak above 260C. I am not certain if passives go through the same test (theoretically they shou
Electronics Forum | Sat Jun 07 23:37:34 EDT 2014 | demzvill
Hello all Good morning. I just want to ask with you guys about the problem that we always experienced in our production. We could not get our target ppm due. to inverted placement of chip resistor. We are using 2000 series juki mounter and cf03hp j
Electronics Forum | Thu Jul 10 13:02:18 EDT 2014 | clydestrum
I'm not sure what happened to my post, but we think to have got the situation under control. The solder joints on the boards looked terrible. I can only describe it as unburnt flux, maybe. (like if you took a spoonful of solder and sprayed flux direc
Electronics Forum | Wed Jun 18 03:19:34 EDT 2014 | edriansyah
Hi All. I'd like to do a little benchmark with you all regarding regarding the reflow speed. What is your highest reflow speed? My own experience is 8.0 m/minutes using a 10 zone reflow machine. Conditions: Mix boards (not only chip components, bu
Electronics Forum | Fri Jul 04 07:11:43 EDT 2014 | padawanlinuxero
Hello We work with a TP9-4 and a MY12 both with tray wagons, I like a lot the tray wagon, for big components we use it, but like AVFM we build our own pallets, and some of them were big 3x30 array or even bigger all pallets were done in a ESD mater
