Electronics Forum | Fri Dec 27 12:12:29 EST 2019 | slthomas
As has already been mentioned, black residue is usually either from dross or just a dirty pot, pump, baffles, etc.. I also saw that maaaany years ago in a system that used a flawed oil intermix "feature" but hopefully those systems are long gone.
Electronics Forum | Fri Dec 27 16:12:54 EST 2019 | anteiv
thank you for reply here is picture of the board https://imgur.com/a/i2MfFBw on the bottom are pins/components which height is about 3-4 mm from bottom of the board we had to increase distance of board from nozzle to make clearance and we increas
Electronics Forum | Tue Dec 31 02:33:57 EST 2019 | anteiv
thanks again for reply, we have now configured speed of traveling so pcb can travel through preheat with one speed (call it v1) and through wave with other speed (call it v2). Lenght of preheat elements is fixed, so with speed v1 we can change pr
Electronics Forum | Tue Dec 31 02:04:19 EST 2019 | sssamw
From the picture, I cannot see clearly solder ball violate electrical clearance or cause a short, maybe it is. What I can see is the solder paste has some misalignment although it doesn't printed in solder mask area, but actual position will reduce
Electronics Forum | Thu Jan 02 22:23:54 EST 2020 | jakapratama
Hello Pak Agus, Was there perhaps a change in solder paste? There has been confirmed occurrence in your case which happened in the work place I was before; all same parameter, equipment, material, and suddenly solder ball outbreak happened across al
Electronics Forum | Thu Jan 02 12:42:49 EST 2020 | slthomas
As far as stencil design for LGA's I was thinking in terms of verifying that you've used the same aperture design criteria that you would normally use for LGA's so you know you didn't introduce some new variable. I've made changes from my norm bas
Electronics Forum | Thu Jan 02 22:09:15 EST 2020 | Zack
Hello, Can you give more detail on LGA parts in question? is 50 mm x 50 mm is overall size of the parts? What about pad pitch and how big is the pads individually? I assume that 50x50 mm is overall size. How about the stencil opening for the LGA pad
Electronics Forum | Tue Jan 07 10:44:54 EST 2020 | emeto
Hello John, We don't want you to feel offended in any way. Very often people are assigned to the wrong task. Picking manufacturing equipment is not as easy as picking a breakfast. There is a lot to consider when making the right choice. Later we end
Electronics Forum | Mon Jan 06 05:53:47 EST 2020 | richardcargill
First switch on after the holidays and this year it's the Dek265 playing up. On switch on, the screen comes up with "motor comms failure, card 0 axis123 " . On looking at the cards there seems to be a power feed missing ( see attached pict
Electronics Forum | Tue Jan 07 02:04:45 EST 2020 | robl
Hi Mikey, Your signal pins (2 & 3) for USB1, 2, & 3 are all connected together so there is no way of splitting the incoming signals from the 3 ports. Normally there would be an IC (a USB hub controller) switching between the signals so that the PC
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