Electronics Forum: degr (Page 1 of 2)

AOI

Electronics Forum | Thu Mar 03 11:02:38 EST 2016 | sssvajunas

Helllo, our company using yestesh BX AOI for board inspection. It is problematic to detect component description in characters that is rotated 45 degres (SO8 and other) with marking inspection, maybe someone can help how to fix it? Characters that ro

Tombstoning 0306's

Electronics Forum | Sun Sep 11 05:48:32 EDT 2005 | Mika

If 0 or 180 degr. make v-shape openings to each other left & riht, if 90 or 270 degr. top/ bottom, on the stencil apertures; well, you understand... We use this and 87 % reduction of stencil apertures for 0603:s and 0402:s. 0.127 mm stencil thicknes

via under a smd pad ?

Electronics Forum | Sat Nov 24 15:44:28 EST 2007 | mika

Hi DaveF, I had a short look into the Nr1. IMPACT OF MICROVIA-IN-PAD DESIGN ON VOID FORMATION Most interesting reading, but one thing though, I could not find any information about the oven profile. Just a picture of it. My question is of about the

Assembleon / Philips support. Ask your question.

Electronics Forum | Sat Feb 27 17:03:07 EST 2010 | deltaservices

Sorry I have never worked on the csm's you can get an old topaz for nearly nothing. Those are easy to calibrate. What could be an option is to place an X-row of chips under 0 degrees 4X then 90degr 4X then 180degr 4X then 270 degr 4X. Place them al

Lead Free Delta T (reflow 7 zones)

Electronics Forum | Thu Mar 09 15:04:41 EST 2006 | geocominc

Please advice how can we reduce a delta T of 40 degres between pads with a seven zones reflow for a LF Assy. max 255 min 215 board size 3x5 inches.

Lead free BGA's & std SnPb paste

Electronics Forum | Fri Oct 31 13:06:42 EST 2003 | Kris

Hi, What would also be important is the time above 217. 20 secs above 225 may be the same as 45 secs above 218 That 7 degres might just buy you enough to sweep the non lead free components through Has anyone tried 220 or 218 peak temp but at lo

Lead-Free SMD repair

Electronics Forum | Sun Jun 12 15:45:12 EDT 2005 | Olof

Hi, We have just recently ordered a pre-heater for repair. Our concerns is: What temperature shuld we working with? I reckon that it shuld/must be between 80-100 degr. Celcuis? And also; How are we dealing with the MS-level (RoHS compliant) componen

Component Zero Orientations for CAD Libraries

Electronics Forum | Fri Jan 04 21:58:03 EST 2008 | mika

Hi everybody out there, A little interesting something for all of us of how to handle the cad-component orientation in regards to cad import into your SMT-machines S/W (Fuji Flexa, FujiCam, UIC, Siemens, Pana, Mydata or Whatever). We have struggle f

Glass Wicking

Electronics Forum | Sat Nov 04 21:30:15 EST 2006 | Ola

Well, I can't tell you what the "glass wicking failure on PCB" are but for a standard FR4-pcb the Tg temp. or the so called glass temp. is 176 celcius degr. This means that the pcb is in between a firm and a buoyant condition. This is really a bit of

BGA

Electronics Forum | Wed May 19 09:28:09 EDT 2010 | speedyuk

HI Im new to this but i thought i would have a go at fixing my xbox 360 be re balling it,ive managed to remove the gpu and take all the old solder balls of and cleaned it up,then ive put it in a re balling jig with the 360 stencil fluxed the gpu wi

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