Electronics Forum: outers (Page 1 of 18)

Missing Outer Ring for TH parts

Electronics Forum | Thu Jan 12 10:21:59 EST 2006 | Dhanish

Can someone advice how the outer ring of TH part can get missing during Wavesolder process beside the Temperature Profile?

CP4 of death

Electronics Forum | Tue Apr 25 12:01:17 EDT 2006 | daxman

Just thought I'd post and let you all know, SMT Research helped me identify the issue here. Turns out it's the outer moveable rail on the XY table. The clamp bracket brakes were in bad shape, and the outer rail was slipping.

Approximating parts count on started reels

Electronics Forum | Tue May 14 20:45:45 EDT 2002 | davef

Ashok Dhawan, an old friend of SMTnet, says: Formula for counting components on SMT tape & reels [spiral belt]: Length = Number of turns * 1/2 * 22/7 * ( dia outer + dia inner), where ... Number of turns = ( dia outer - dia inner) / thickness of

DEK Stencil image offset?

Electronics Forum | Sun Jul 19 06:11:32 EDT 2009 | dekhead

For 29x29; 622mm from rear (outer) edge of frame to front edge of board.

SMT WAFFLE TRAY DIMENSIONS

Electronics Forum | Wed Jul 21 10:26:19 EDT 2010 | cyber_wolf

They define outer tray dimension and thickness. The array is specific to the component type.

QFP footprint -extended outside pad?

Electronics Forum | Fri Sep 16 08:05:15 EDT 2011 | jax

Some people believe that increasing the outer dimension will aid in centering the device during reflow...

Solder short-BGA with thermal pad

Electronics Forum | Tue Feb 18 22:15:04 EST 2003 | davef

Arturo, So, you're not shorting to a thermal pad. Given that you're shorting to outer balls, tell us about: * Location of the shorting among the outer balls. * Board construction. * BGA constuction. * Paste deposition. * Temperature measurements ta

Production Defets

Electronics Forum | Fri Jul 28 21:58:44 EDT 2006 | Wave Master Larry

All you funny guys and your names. Listen, this is whats wrong with this forum and the world today. Too many clowns making fun of serious buisness. What the hell is POD group anyway. Sounds like some outer space movie to me. Maybe they hung up o

Solder mask

Electronics Forum | Wed Jan 14 18:23:05 EST 2009 | boardhouse

konrad, Here are a couple of things that can affect color. 1) Material color is the major, 2) Matte green from Enthone would be different in shad than Matte green from Taiyo. 3) Solder mask is two parts, One the green mask, two the hardner, having t

PCB with stains bleach after flux aqueous wash

Electronics Forum | Wed Feb 11 17:04:47 EST 2015 | davef

A-610E, 10.7.4 covers solder mask discoloration. Use that for your disposition In a previous thread, Boardhouse told us "Here are a couple of things that can affect color. * Material color is the major, * Matte green from Enthone would be different

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