Electronics Forum | Wed Nov 27 20:14:15 EST 2013 | mac5
Evtimov, I have yet to find any ‘good’ belt feeders. If a part is offered only in a tube we send the part out for value added tape and reel. Just make sure you specify the polarity of the part in the reel to your vendor. If that is not an option we
Electronics Forum | Fri Dec 04 23:15:45 EST 2015 | mac5
You say that there is no green solder mask around the lands of the BGA only silk screen. If that is the case I would be concerned about the solderabilty of the component if the silk screen gets onto the pads. The application of solder mask is much mo
Electronics Forum | Thu Aug 03 12:44:07 EDT 2017 | davef
Try: * RD Chemical [ http://rdchem.com/chemposit-sn-rd-51.html ] * MacDermid [ http://electronics.macdermidenthone.com/products-and-applications/printed-circuit-board/final-finishes/immersion-tin/ ] * Technic [ https://www.technic.com/applications
Electronics Forum | Tue May 30 09:27:08 EDT 2000 | PhilB
More and more PCB fabs are switching from chemical copper to what is called a "black hole" process from McDermitt.In this process a very thin layer of carbon is put on the base material instead of chemical copper. Can anyone tell me about the advanta
Electronics Forum | Sat Aug 04 15:58:27 EDT 2001 | Ralph Wagner
Q. Mr. Kerry, who did you vote for, Gore or Bush? A. SmartSonic Q. Mr. Kerry, what is your favorite color? A. SmartSonic Q. Mr. Kerry, do you believe in Creationism or Darwinism? A. SmartSonic Q. Mr. Kerry, IBM or Mac? A. SmartSonic Q
Electronics Forum | Fri Jan 21 18:47:14 EST 2000 | Ashok Dhawan
This massage is for clarifications on storage and handling of Moisture sensitive parts: Does chip resistors,capacitors and inductors need vacuum packing during usage life? For repacking of FPDs to limit reuse, is it necessary to use vacuum seler or s
Electronics Forum | Thu Jul 22 05:00:45 EDT 1999 | George Verboven
| I have pcb's in which i am experiencing warping. | the boards are 12.8125" on a diagonal measurement. | they are out approximatley .010". | the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,and what is the pr
Electronics Forum | Mon May 13 16:20:10 EDT 2002 | ian
Are you refering to MacDermid Sterling Silver finish or immersion silver in general. We have had enquiries about Sterling Silver from a customer and the blurb I have read looks very good (don't most sales literature). Has anyone tried this finish? O
Electronics Forum | Tue May 25 10:16:03 EDT 2004 | Bimal Patel
We are doing assemblies using Immersion Silver coating for RF assembly for a while now. We did not have problem using 63/37 SN/PB solder paste untill recently. We started seeing black marks on the finish and around the solder joint recently. We have
Electronics Forum | Tue May 25 10:16:07 EDT 2004 | Bimal Patel
We are doing assemblies using Immersion Silver coating for RF assembly for a while now. We did not have problem using 63/37 SN/PB solder paste untill recently. We started seeing black marks on the finish and around the solder joint recently. We have
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