Electronics Forum | Tue Oct 04 11:42:07 EDT 2005 | Bob Leible
I was wondering if anyone has studied the effects of tin lead solder in the wave. If we leave the same solder in the solder pot, how many COMPLETE cool downs and start ups can the solder go through before it begins to break down? Please let me know
Electronics Forum | Tue Oct 04 12:49:59 EDT 2005 | patrickbruneel
The amount of times the tin/lead solder can be melted and solidified is unlimited and the heat cycles do not affect the solder characteristics. The only reason for changing the solder pot is when impurities are at or over the maximum levels.
Electronics Forum | Tue Oct 04 11:46:02 EDT 2005 | johnw
Hi guys I am looking for rubber mats to place over the carriers before entering the wash plant so the boards dont fall out of the carrier any ideas whereI can get my hands on these I am in the uk cheers
Electronics Forum | Tue Oct 04 13:44:41 EDT 2005 | ???
Do any of you guys/gals that use these machine's have problems with the machine consistently finding no solders on 0402 parts???
Electronics Forum | Wed Oct 05 15:31:44 EDT 2005 | chunks
Thanks Amol, You brought up some good ideas that we'll use. Has anyone ever heard of under filling the BGA (after reflow) with a material that cures, then thermal removing the BGA to check the acual size of the ball to pad?
Electronics Forum | Thu Oct 06 07:28:11 EDT 2005 | chunks
The obvious is size. Besides that, it depends on your screen printer. Some "smart heads" need to be retaught with the metal blades for each board. Some need to have the set-up programmed changed too. Angle of attack is something to double check a
Electronics Forum | Thu Oct 06 08:55:05 EDT 2005 | stepheniii
If a rubber squeege is bumped on the edge, no biggee. But you have to be carefull the metal ones don't get dinged. All it takes is a little extra care but if your operators are used to handling the rubber one they might not increase the amount of c
Electronics Forum | Thu Oct 06 15:04:14 EDT 2005 | chunks
Stephen reminded me of another issue - be careful when handling or wiping new metal blades. They can cut you (oh the pain).
Electronics Forum | Wed Oct 12 19:54:03 EDT 2005 | AA
Hi, Thanks for the answers. I have a few others: How often you replace metal squeegees? Do they shorten the life of the stencil?
Electronics Forum | Wed Oct 05 20:23:36 EDT 2005 | mdang
Hi, I am looking for a utility to clone a mydata TP11 hard disk for backup purposes. Can you help? Thanks, -Michael
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