Electronics Forum | Mon Nov 20 04:39:19 EST 2000 | SV
Hello, I have to design a PCB for which the customer have the following temperature requirements: -55degC to +85degC operating temp. -61degC to +125degC storage temp. My question is: does the FR4 material meet this conditions? Which are the parame
Electronics Forum | Wed Sep 23 18:20:48 EDT 1998 | Alvaro Carrillo
Hy everybody. Somebody know about a IC's storage with controled temperature, vacum for special IC. I apreciate any information about, Where can I buy, whatever. thanks AC
Electronics Forum | Wed Jan 19 05:22:20 EST 2000 | Neil Stoddart
Help! I need to know what is the most cost effective and reliable method of storing BGA's at trackside, once they have been removed from their dry pack? The method of storage needs to keep the components below 20% RH, at room temperature without the
Electronics Forum | Sun Nov 08 15:27:25 EST 2015 | davef
Thinner: Flux thinner, NOT paint thinner We kept a spare stone in thinner in inventory. We cut PVC pipe to size, cap in one end, screw thread on the other, stone inside, filled with flux thinner and covered with a screw cap. I don't remember who we
Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef
Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept
Electronics Forum | Mon Nov 27 17:44:10 EST 2000 | Dave F
Gawd. Sure FR-4 will meet those conditions. Tg [check the fine SMTnet Archives for discussion on Tg] of FR-4 is 130�F or so. Consider: * Is the delT between Tg and the upper operating [or storage] temperature acceptable for your application? * D
Electronics Forum | Tue Nov 09 10:35:02 EST 1999 | WilDaly
Tim, I try to get 2-3 degrees C/sec (bottomside) rise on my boards through wavesolder. I like to get the topside to about 90-95 degrees C, but this is the optimum temp for the flux that I am using. To fast of a slope and you will burn your flux of
Electronics Forum | Mon Apr 16 12:59:51 EDT 2001 | Mike R
If you will place a temperature strip on the board during wave soldering process you will get a max of 210 F or 98.8 C which is normal on the standard wave temperature. The problem on the 10% solder on the TH via hole can be caused by insufficient fl
Electronics Forum | Thu Jun 08 04:31:24 EDT 2006 | vasily
Hi First I think you have to analize your PCB design. Heavy weight components should be gathered on one side of PCB. As I think, if you want to reflow both sides simultaneously there might be a problem. A chance that large components will drop off
Electronics Forum | Thu Apr 05 10:50:08 EDT 2001 | CAL
Per our staff here at ACI......... Higher Temperatures maybe necessary to achieve good solder process results. The alloy formed when HASL coating protects the copper is the same as that when OSP provide protection. Temperatures may be increased to im
winsouce.jpg)