Electronics Forum | Sun Jan 07 08:46:08 EST 2018 | spoiltforchoice
Your paste should specify a number of times it is OK for various things to happen. The two you might care about are the "Stencil Time"/"Working life", which is how long the paste can be out of the pot on your stencil while you print PCBs. The othe
Electronics Forum | Tue Jun 11 14:58:45 EDT 2002 | Chris Lampron
Hello Sean, We are currently using a Pin in Paste process to mount some through hole relays. This particular board has 72 relays per. We have cut the stencil to overprint the hole. By putting a small amount of solder in the hole to flux the lead, th
Electronics Forum | Thu Jul 09 13:05:46 EDT 1998 | Phil Crane
I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a completely new ball game when it comes to slump, tack time, stencil life, tack time, etc. Thanks for any and all help given
Electronics Forum | Thu Jul 09 13:04:19 EDT 1998 | Phil
I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a completely new ball game when it comes to slump, tack time, stencil life, tack time, etc. Thanks for any and all help given
Electronics Forum | Fri Apr 30 11:03:27 EDT 1999 | Wade Oberle
| | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | My question's are really : | | how is the
Electronics Forum | Fri Jul 10 13:49:27 EDT 1998 | Bob Willis
I have some nice simple test methods that I will email to you this weekend thats one of the documents I must put on my site. | I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a
Electronics Forum | Fri Jul 10 13:48:41 EDT 1998 | Bob Willis
I have some nice simple test methods that I will email to you this weekend thats one of the documents I must put on my site. | I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a
Electronics Forum | Tue Jan 06 09:33:06 EST 2009 | blnorman
Years ago when we ran a solder paste evaluation we used the 2.4.44 method mentioned above. What we did was to print several coupons and let them sit for various times to see how the tack changed over time. Our goal was to see how long after print w
Electronics Forum | Thu Feb 27 13:59:52 EST 2014 | rway
I agree with Comatose; although, 30 seconds I feel is stretching it bit. I would say anywhere from 40-60 sec. 5 seconds for removal 15 seconds to install (tack) 10 seconds to solder 10 seconds for inspection There's no need to dress the pads. Use t
Electronics Forum | Fri Mar 24 10:26:45 EST 2000 | Russ
Sal, Interesting problem, I have found that W.S. pastes tend to have a shorter tack time in real life than what is advertised. Usually the manufacturers specify tack time as after placement let the board sit and then turn it upside down and see if
