Electronics Forum | Fri Nov 01 17:40:55 EST 2002 | russ
Ken, Is it really possible to load P.T.H., handsolder SMT apply glue or whatever when a board is in a tray? I am trying to get a visual here. I may not understand what types of trays you are talking about. Please contact me offline to discuss. I
Electronics Forum | Fri Nov 01 18:59:54 EST 2002 | kenbliss
Hi Russ I have customers doing all those things all the time in the trays, I would be glad to talk off line. I tried to email you but it did not work, please email me your phone number or call me. Ken Bliss 510-490-8401 kbliss@blissindustries.com
Electronics Forum | Mon Nov 04 10:14:49 EST 2002 | blnorman
We manually handle boards all the time (repair, clean misprint solder paste, etc.). The workers know to handle with gloves, but it's a rarity that they do. We also use hand lotions in the plant, and a couple of times, lotion residue has shown up on
Electronics Forum | Wed Nov 06 11:12:33 EST 2002 | blnorman
I agree whole heartedly. Unfortunately in the different industries I've worked (garment, appliance, aerospace, and now electronics) this is a common issue. These procedures are in place for product reliability as well as safety. I trained at the
Electronics Forum | Sat Nov 09 15:13:06 EST 2002 | mjabure
If I understand what you're saying, you are reaching reflow temp's on the top side while soldering bottom side components. You might want to run a glass gauge plate over the wave and make sure your contact pattern isn't too large. If your PCB is in c
Electronics Forum | Wed Nov 20 16:40:32 EST 2002 | csimfgeng
Sign makers utilize a material called "Scotch-Cal" and "Scotch-Brite" in making decals used in outdoor environments. Material similar to this comes in metallic silver and gold. Pieces of this can be economically die-cut and affixed to your PC Board
Electronics Forum | Mon Dec 09 08:13:06 EST 2002 | MA/NY DDave
Hi Yes it is common to design for more uniform heat transfer during the soldering phase or even during the operation phase. It all depends on how bad the problem is during automated assembly or during usage. The only difficulty is that the designer
Electronics Forum | Tue Dec 17 08:55:52 EST 2002 | Randy Villeneuve
Grant, The board maybe the problem but how is your oven working? Is it a convection oven and how many zones (top and bottom)? What does your profile look like? If you are unsure and if you only have one oven, send your board to Soltec or Electrovert
Electronics Forum | Thu Dec 12 10:54:57 EST 2002 | russ
I have had both success and failure with immersion tin. It seems to be very dependant upon the PCB suppliers process control. If its too thin, solderability is greatly diminished. I have never had it too thick (see Daves comments). We currently d
Electronics Forum | Mon Dec 16 21:34:05 EST 2002 | grantp
Hi, Yes, the stencil does touch the PCB. Is there another method? Sorry to sound a bit dumb on that, however I don't have a lot of experience with automated stencil printing, and manual has been working well up to now with this BGA. Regards, Gra
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