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 | Tue Jun 11 04:08:55 EDT 2019 | aite
What type of product are you talking about in SMT? The SMT05E series are non-isolated DC/DC converters packaged in a surface mount footprintgiving designers a cost effective solution for conversion from a 3.3V to 5V source. Operating Temperature is -
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 | Thu Sep 16 12:06:29 EDT 1999 | Scott S. Snider
| | | Hi, | | | | | | Can someone pls suggest to me the best reflow temperature setting | | | for a force air convection oven. The details is as follow. | | | 1) Heller 1700s | | | 2) 12 zone---6 top and 6 bot | | | 3) Solder paste --- Qualitek 691
Electronics Forum | Tue Feb 27 10:19:06 EST 2007 | Michael Konrad
If you�re running chemistry in the wash, the wash temperature will be influenced by the chemical manufacturer�s recommendations. Typically, wash chemistries recommend operating temperatures between 130F and 150F. If your application is straight D
Electronics Forum | Thu Sep 04 02:43:09 EDT 2008 | benefon
Thanks This error only occurred with one oven profile with the reflow zone temperature set at 270�C. Perhaps it really has to do with the exhaust pull as the oven is operating very near its temperature limit with this profile. I will check that. Tha
Electronics Forum | Wed Sep 03 07:39:19 EDT 2008 | pjc
You may not be getting enough exhaust pull, so the cooling modules over temp. Try swapping blower motors to isolate that before buying one. STANDARD AIR OPERATION: - Load-end: 150 cfm (255 m3/hr) at the 4� (102 mm) stack (minimum requirement) - Unlo
Electronics Forum | Mon Nov 15 21:32:31 EST 1999 | Dave F
Wolfgang: Sounds like gluteus maximus protection time. 1 "Maximum suitable temperature for the solder joint should be half the liquidous temperature" is a good rule of thumb. Where it came from, I don�t know. One place I�ve seen it repeated is: H
Electronics Forum | Tue Dec 16 11:39:33 EST 2003 | davef
Sounds like your preheat temperature controllers are out of adjustment. Check your operating manual for instructions.
Electronics Forum | Fri Jan 21 14:51:08 EST 2000 | Dave F
Mike: I�d hate to see you making design decisions, based solely on the discussion here, but that this would be an impetus to consult IPC-D-279, "Design Guidelines ... " and take a course on designing reliable boards. Werner Engelmaier (Engelmaier
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