Electronics Forum | Mon Aug 21 20:17:08 EDT 2000 | Dave F
Hey Gyver: Oooow, using a pencil eraser has to take time. I would hate to be the person responding to your customer trying to explain the pencil eraser shreds accidentally left on the board. Awww, just spritz it with DI water and wipe it off with
Electronics Forum | Tue Jul 11 15:59:52 EDT 2000 | JohnW
George, I looked at the winkic & profit software and tool's a while ago along with some of the alternatives. No matter what anyone tell's you in the 1st instance you do still need a profile card as what you are doing is comparing the known good prof
Electronics Forum | Mon Apr 17 19:44:20 EDT 2000 | Dave F
Ashok: Well, your customer probably has a good reason for wanting you to send them boards without holes in the solder mask. What is their goal for the mask capabilities after you get do reworking the boards? * Cosmetic surface coat? * Performance t
Electronics Forum | Wed Feb 21 19:55:12 EST 2001 | davef
References on corrosion are: * "ASM Corrosion Handbook No. 13" [0871700077]. * "Electronic Packaging and Corrosion" ME Nicholson [0871702916]. Please explain how you determined that you have silver-sulfide contamination. Where is the silver comin
Electronics Forum | Mon Feb 26 19:56:24 EST 2001 | davef
SMTnet Archives used to have copious amounts of information on a pin-in-hole [e.g., pin-in-paste, paste-in-hole, etc] reflow process, but much of that appears lost with the conversion to the new and improved site format. In getting started, check:
Electronics Forum | Tue Apr 17 10:16:42 EDT 2001 | davef
Welcome to SMTnet. Awww, those assemblers are always whining about something. Just tell him to shut-up and build the blankin� boards. Jeesh!!! We used to have copious archives on the topic on SMTnet and our friend Brian is working his fingers t
Electronics Forum | Thu Aug 24 09:23:29 EDT 2000 | Dr. Ning-Cheng Lee
You are asking a very good question which has been an issue in the industry for a long long time. For operating at 225C, you will need a solder with melting point no lower than 270 or even 280C. HMP solder is very difficult to come by. At this stage,
Electronics Forum | Wed May 16 12:08:24 EDT 2001 | raton
Some thoughts- Torque applied to each joint is case specific. I know there are charts and all, but they don't account for YOUR situation such as screwing a fab to a chassis(or your aluminum screw). If the customer sets a spec then use it. (But i
Electronics Forum | Wed May 16 10:37:34 EDT 2001 | davef
Similar to my response to your previous posting on this topic dated 5/8/01, things to try are: 1 Contact your non-supplier [Streckfuss] using the contact points at http://www.streckfuss.com/wave_soldering.htm, obtain source drawings for components o
Electronics Forum | Tue May 22 17:24:12 EDT 2001 | davef
What is your thinking on the issues surrounding design and manufacture with leadless leadframe [eg, land grid array, micropak] components beyond those in http://www.national.com/ads-cgi/viewer.pl/an/AN/AN-1187.pdf? The curve ball that we just looked
