Electronics Forum | Tue Aug 25 10:25:56 EDT 2009 | grahamcooper22
Do you know the exact BGA sphere alloy make-up and the alloys melt temp ? Then you can judge the ideal reflow temperature. Also, does the package warp in the reflow zone ? This may be causing the solder spheres on the BGA to lift off the pcb and henc
Electronics Forum | Mon Aug 24 03:59:26 EDT 2009 | hurr
Hallo Joanne, I had employed by producer of Ecofrec 303. We make many tests of corrosion and conductive test in our company. All results of this tests was OK . Vast majority correspond mil standarts. When I ask my labor assistent in BRY, white residu
Electronics Forum | Tue Aug 25 08:04:26 EDT 2009 | davef
Trapped moisture can be a problem, and one standard recommends baking a PCB for a minimum of 4 hours at 93+/- 5.5ºC before conformally coating. [NASA-STD-8739.1, “Workmanship Standard for Staking and Conformal Coating of Printed Wiring Boards and Ele
Electronics Forum | Tue Sep 01 02:54:30 EDT 2009 | rocko
Hi davef, In response to your questions: 1) It is a programmable washer designed for the tough demands of industrial applications. There is an integrated forced air dryer with both coarse and HEPA filters. 2) The surface of the PCB panel, the comp
Electronics Forum | Thu Sep 03 14:21:29 EDT 2009 | davef
Creeping corrosion occurs on bare metal. Most commonly, it is seen on boards with thin protective coatings [eg, bare copper, immersion silver, organic solderability preservative]. Look here: * enthone.com/docs/AlphaSTARCreeping.pdf * circuitree.com
Electronics Forum | Fri Sep 18 04:19:33 EDT 2009 | gregoryyork
Glycerine on a PCB is very bad news as it is Hygroscopic and can attract moisture to the Circuit. Alot of this used to be used in HASL Fluxes and is a no go for Circuits that are not going to be washed. They too could dissolve the natural Halides fro
Electronics Forum | Tue Nov 17 19:03:53 EST 2009 | rrlotion
There can be an alternative to putting Alcohol Based Sanitizers made with Glycerin into electronic assembly areas. We are already providing an Antibacterial Lotion to many electronic manufacturers so that there is compliance with handling PCB's as w
Electronics Forum | Mon Sep 21 11:29:52 EDT 2009 | edmneb
The part we are looking for is the touchscreen controller manufactured by Microtouch. There is no specific part number called out in the UIC drawing book, but the part that we found on the PCB of the Microtouch unit was 7209401. We did swap the con
Electronics Forum | Sat Sep 19 16:15:27 EDT 2009 | sskeels
I am looking for a forum to ask for leads (other forums or manufacturers) who might provide what are called IC Adapters or Carriers which allow the use of an IC with a changed footprint (land pattern or pin-out) to be used on a previous PCB which has
Electronics Forum | Tue Sep 22 07:18:19 EDT 2009 | davef
While you're waiting for others to reply, search the fine SMTnet Archives to find postings like: * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=23229 * http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=26457 * http://www.smtnet
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18220 Butterfield Blvd
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Phone: 5102268155
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