Browse Shea, Chrys

1-21 out of 21 article(s)

Title	Date	Words
Revisiting rework: excess copper dissolution remains a big problem for assemblers.	Apr 1, 2009	1597
Head-in-pillow and hybrid solder pastes: the HIP epidemic proliferates, but the cure must not create new problems.	Dec 1, 2008	1505
A clean start: our columnist gets a wakeup call on the tenacity of Pb-free residues.	Oct 1, 2008	651
There's something about copper; Characterizing copper erosion in soldering remains elusive.	Sep 1, 2008	903
ABCs of price vs. value: what first-graders can't tell you about cost of ownership.	Aug 1, 2008	1330
HOP-ping mad: reprofiling may be the best containment method for head-on-pillow.	Jul 1, 2008	1347
Erasing fab problems: the pink pencil eraser and other solutions.	May 1, 2008	925
Franklin's wisdom: why "or equivalent" is the enemy of quality and consistency.	Apr 1, 2008	911
Bare board concerns: Pb-free alloys exacerbate copper erosion and blowholes.	Mar 1, 2008	718
Time to decommoditize PWB fabrication: pennies saved on the front end can cost big money in rework.	Feb 1, 2008	781
Halogens and halides: a gearhead's guide to some of the chemicals that make up our boards.	Jan 1, 2008	1356
A small perk: SAC 305 produces 10 times fewer mid-chip solder balls than does SnPb.	Dec 1, 2007	862
The disappearing defects: compensating for PWB positional inaccuracies in 0201s.	Oct 1, 2007	1069
Keep an eye on your pot: your solder pot may be trying to tell you something.	Sep 1, 2007	837
Hot over preheat: for Pb-free, preheat can make or break the process.	Aug 1, 2007	1664
The new 'mixed technology' PCB: what will you do when SnPb balls are discontinued?	Jul 1, 2007	1182
Lead spread: Pb-free pastes do not spread like SnPb on OSP.	Jun 1, 2007	1243
Fictions of Pb-free surface mounting: new components have no SnPb history, making it important to keep process chemistries up to date.	May 1, 2007	1169
Constructing DoEs: in the transition to Pb-free, we resolved everything. Except the soldering process, that is.	Apr 1, 2007	1359
Wave soldering facts and fiction: our newest columnist takes on the myths of the solder bath.	Jan 1, 2007	962
Optimizing stencil design for Pb-free SMT: in quantifying the impact of solder spread on typical SMT defects, the authors devised new apertures and a new test pattern.	Jul 1, 2005	2940