Electronics Forum | Mon Oct 04 20:06:31 EDT 2004 | davef
We know SIR coupons are not ROSE coupons, but coupon boards are: * IPC-B-24 (copper and HASL, FR-4 and polyimide) * IPC-B-36 (bare copper and HASL, FR-4 and polyimide) * IPC Phoenix board (bare copper, FR-4) * IPC-B-25A (FR-4, bare copper only)
Electronics Forum | Tue Oct 05 08:05:42 EDT 2004 | Grant
Hi, Has anyone had any experience with lead free Sn-8Zn-3Bi solder paste? Apparently in Japan it's becoming popular because it's got a melting point of below +200C. Can anyone confirm that, or does anyone have experience with it? Regards, Grant
Electronics Forum | Sun Oct 31 09:24:57 EST 2004 | Steve
Consider the availability and the cost of the product. SN/AG/CU is going to be the lead free choice from what I understand. Thus the distributors will be purchasing this formulation in volume thus reducing cost per gram. You get into something that i
Electronics Forum | Tue Oct 05 17:26:16 EDT 2004 | davef
The type and location of the crack give hints about the cause. What does your failure analysis say? Continuing, this a relatively common complaint. While you're waiting for other reponses, searching the fine SMTnet Archives will probably give prev
Electronics Forum | Mon Oct 18 11:01:26 EDT 2004 | DenisM
I have had similar problems and my customers have had this too. A two story drop test was made by one of my customers and they found that changing Sn63 solder to Sn62 solder made a significant impact. There is no real downside other than a slightly
Electronics Forum | Sun Oct 10 00:49:46 EDT 2004 | Grant
Hi, I just did a seminar on lead free, but don't have any experience myself yet. However the guy running the course said that in all the testing he had done he had not seen any major difference between lead and non lead soldering. He spent quite a b
Electronics Forum | Mon Oct 11 06:22:54 EDT 2004 | C Lampron
Jim, I also do not have any practical expeince at this time with the LF. I can only imagine that the reduced spread/flow of the LF would make the process window for intrusive reflow that much smaller. I think that things like pin to hole ratio and h
Electronics Forum | Wed Oct 06 13:41:38 EDT 2004 | pjc
Here are some of the leading mfrs.: http://www.pressureproducts.com http://www.smartsonic.com http://www.aqueoustechnologies.com http://www.emcgti.com http://www.jnjultrasonics.com Using ultrasonics has proven to be most effective at dislodgei
Electronics Forum | Fri Oct 22 09:40:13 EDT 2004 | cburress
Thanks for the input everyone, but I am looking for a PCB manufacturer, not a PCB assembly house. I have some designs that I'd like to get quoted on (from Gerber files). I have my own SMT line to populate the board. Do any of you know of a manufac
Electronics Forum | Mon Oct 25 13:27:24 EDT 2004 | davef
If you require a board 'fabricator' [as opposted to a board 'assembler'], look here: http://pslm.ipc.org/IPBMsearch.asp If that doesn't work, for fabricators consider: * Data Circuits http://www.datacircuits.com * Merix http://www.merix.com * Cir
