Electronics Forum | Tue Jun 07 16:19:58 EDT 2005 | davef
Q1) How to identify on good or bad ICs lead that could contribute to dewetting? A1) Distinguish between good or bad IC that could contribute to dewetting by testing for solderability, according to J-STD-002. Q2) What actions that must be taken in fa
Electronics Forum | Mon Jun 27 09:09:19 EDT 2005 | Bob R.
We've all been soldering Pb free parts for a couple decades. All your surface mount capacitors have probably had a Sn finish for years. Whenever one of our parts with a SnPb finish converts for Pb free we have the manufacturing site do a small buil
Electronics Forum | Thu Aug 11 08:53:40 EDT 2005 | stefwitt
I�ve seen new table-top machines for $ 15,000 at exhibitions, but only one time and the same vendor didn�t show up the next time. Realistically, new machines capable of doing 0402 and 20 mil and a few kpph under $ 15,000 do not exist. Any used mach
Electronics Forum | Thu Aug 11 21:43:19 EDT 2005 | Ken
Those temp stickers are useless unless you can stick them into the copper barrel. They can only determine "skin" temperature which has nothing to do with what is happening in the barrels. Your solder is filling the barrel then going cold. I'll gua
Electronics Forum | Wed Aug 17 14:18:11 EDT 2005 | ppwlee
Dave, Answers to your questions: * From your pictures, the white residue appears to be only on the solder mask. Is that correct? If not, what is the location [eg, solder, nonsolder/nonmask areas] of the residue that doesn't show well in the pictur
Electronics Forum | Mon Aug 22 10:33:23 EDT 2005 | davef
Q1. What is recommended viscosity standard? A1: There is no standard. ASTM D4040-05 "Standard Test Method for Rheological Properties of Paste Printing and Vehicles by the Falling-Rod Viscometer" is a test method that might work. For more, look her
Electronics Forum | Wed Sep 07 10:34:52 EDT 2005 | PWH
Have experienced this on a few different cap. parts. Agree with other postings. Following are solutions to problems we have had: 1) Cracked cap too close to board edge per IPC spec. Designer replaced part with 3 caps in series to eleviate stress
Electronics Forum | Fri Sep 02 07:38:13 EDT 2005 | DannyJ
Hi Mike, I haven't tried the 0201s with a Hyrda, but after seeing 20 reviews of your message without a response, I'll try and share my experience with 0402s on a non-Hydra machine. The 0402s are slow, but I managed to get some speed by maxing out
Electronics Forum | Mon Apr 24 14:04:44 EDT 2006 | pjc
You did not tell us where your boards fit on the thermal mass range. That is key. I've run Pb Free low to medium thermal mass boards with good results on a 5 zone oven (5 top/5 bottom). You should not have a problem running a medium thermal mass boa
Electronics Forum | Wed Sep 21 12:30:03 EDT 2005 | Rob
Hi Greg, We've used lots of machines over the years & seen lots of different tape related issues - the main one being snap off of the cover tape, usually due to too much glue, over entusiastic heat seal, or a feeder requiring maintainance. Also the
