Full Site - : mika (Page 9 of 10)

TNT-A capacitors placement problem at CP-6

Electronics Forum | Sun Dec 31 10:27:39 EST 2006 | pima

Thanks Mika. I will have opportunity to check it out in New Year, because now we dont have production. So far we have beeen using vision type 11 and to be honest this type of defect, that placement of TNTA at flank side, happend very seldom. Usually

Fuji Flexa

Electronics Forum | Thu Jun 05 20:20:30 EDT 2008 | mika

Of course this should never occur, but this, forgive me shitty worlds of a complex Flexa system, which makes me cry once in a while. Does anybody here at this forum know what it takes to install this shit? First You have to set up a dedicated Flexa

uBGA 380 Solder ball to pad

Electronics Forum | Thu Jun 19 21:39:31 EDT 2008 | mika

Hi, we used to have a RoHS package with uBGA 380 Solder ball's 0.8 mm pitch approx 15x15 mm, bump size is 0.4mm on a 0.33mm pad. Suddenly we need to use another vendor for various reasons. However, the new bump size is 0.45mm according to specs and t

General SMT Question

Electronics Forum | Sun Nov 23 08:28:16 EST 2008 | orian

Wow im amazed by the amount of replies I got, thank you all for your time. Davef, Mika, and eetour Thank you all for the websites, I've found googling homebrew to be most useful there really is alot of content, too bad I didn't search for that in th

QFN Thermal pad voiding

Electronics Forum | Wed Jun 03 13:56:09 EDT 2009 | mika

less total area of voids, which mean a much more strength in the joint and much easier to solder such a cooling pad grounded via vias, with this approach! The same goes for big cooling pads of let say Power transistors without any via etc. Always re

GSM Calibration Error code 6

Electronics Forum | Sat Sep 22 01:30:31 EDT 2007 | mika

I am sorry my friend, but I can't recall that specific error number. But it would help if you explain a little bit more about your problem. Remember that an error code Do Not necessary points to a direct root-cause of a problem. First of all we nee

How long does it tkae for Tin-Lead solder to rust if put outside

Electronics Forum | Thu Sep 27 23:24:22 EDT 2007 | mika

Fe2+(aq) + 2e- "harply, but this is of no consequence since OH- ions are always present, even in pure water.) The cations then react with the OH- or even the H+ ions and dissolved oxygen to form a variety of compounds, which constitute rust: Fe2+(aq

what is the max print speed? thanks for your help

Electronics Forum | Sat Nov 17 12:58:12 EST 2007 | mika

I agree with previous postings regarding print speed: Solder paste type/versus fine pitch. Question: Is this a double sided pcb with fairly easy component packages on both sides? In such case, consider make the panel like this: Every second pcb in

Not enough lube ?

Electronics Forum | Sat Feb 02 18:30:35 EST 2008 | mika

File meny > Save for the Web. I know that the Adobe Photoshop is not in every man's hand. Even though I know that there is a some good free-ware that can do similar to this, converts for ex. a jpeg to a smaller size jpeg, without to loose to much of

QFP Shifting / Solderability Issue

Electronics Forum | Fri Jun 01 22:49:50 EDT 2007 | mika

These ones from ALTERA the QFFP-304 0.5mm weight: 32gr. used to give us a really headache in the past. Not only soldering issue:s but also the placement in x-y-theta! The stencil thickness of ours is 0.13mm and because of ohter compomponent packages,


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