Electronics Forum | Fri Jan 12 09:44:17 EST 2001 | blnorman
Having formerly worked for a solid rocket motor manufacturer, we were extremely concerned with ESD. I'm not sure of the specifics, but all our floors were painted (concrete). All employees in these areas wore steel toed, conductive shoes, to dissip
Electronics Forum | Mon Nov 27 12:22:52 EST 2000 | rabell
You might want to check with Atlas Copco re the characteristics of the tool case. Although it is plastic, it could have been formulated to be dissipative. Unfortunately, with power tools there is always the conflict between the need to isolate the
Electronics Forum | Fri Nov 12 10:36:33 EST 1999 | Dave F
Wolfgang: Sure, stacking chip components is common practice in prototyping, as you say, but it's not good practice for production work. Documentation: * ANSI-IPC-275 does not allow stacking * MIL-STD-2000A does not allow stacking * J-STD-001B is u
Electronics Forum | Thu Aug 12 10:49:22 EDT 1999 | Ray Hare
I am currently involved with designing a pcb which will use 225 pin bga,s The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is use the middle 6 or 7 rows of balls as the grounding,th
Electronics Forum | Tue Jan 05 13:03:28 EST 1999 | Michael Allen
Another concern is that some bulk feeders present resistors upside-down 50% of the time; I'm told that this can affect heat dissipation and cause other problems (e.g., hidden partmark). Note: this is not a problem with chip capacitors because they'r
Electronics Forum | Tue Jun 04 20:47:10 EDT 2002 | russ
A company I used to work for did not use wrist straps in some areas for the same reason. We had a conductive floor (not dissipative wax) and ESD shoes and heel straps that we tested three times a day. If you can ensure that feet are always on the fl
Electronics Forum | Thu Oct 17 12:58:15 EDT 2002 | babe
I agree with everything stated thus far. However, what soldering iron are you using. You may be able to solder the pin with an iron that delivers continuous heat and if there is room utilize a large tip as a heat reservoir. What happens is that the i
Electronics Forum | Thu Dec 19 20:03:27 EST 2002 | edmentzer
Does any one have any experince with heatsinking a 240 lead QFP such as the Lattice Orca to the PCB? I have a customer who would like to know how this might be done. We are thinking of using some solder paste under the center of the part, or using
Electronics Forum | Wed Feb 05 21:05:38 EST 2003 | davef
Iman On your situation: As an earlier poster stated, your options are limited to opening you stencil aperture to compensate for the paste lost to the via. On your designer's belief that "it helps in heat dissipation": Could be true, but: * Hole wil
Electronics Forum | Thu Sep 25 09:13:21 EDT 2003 | davef
Pete: That ACL Staticide� is used on the bulb of the Arach Technology & Application Corp Vacuum Pen� to attain ESD proprties, make us uneasy. "Staticide" is a topical anti-static solution. It's a soap that absorbs moisture from the air to improve
