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
Electronics Forum | Fri Mar 24 03:06:35 EST 2000 | Sal
guys Using a well estrablished water soluble solder paste, but having problems with tack time. Data sheet recommend a couple of hours but we are seeing problems after about 15 minutes with 0402/0603 componenets bouncing off. The printer environment
Electronics Forum | Thu Jul 09 17:05:22 EDT 1998 | Dave F
| 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 give
Electronics Forum | Sat Jan 24 00:13:57 EST 1998 | Scott
| What is the lifetime for a typical solder paste ? | How long can boards be stacked waiting before the paste goes off ? Lifetime and tack time depends on: - Manufacturer - Flux/mixture - Environmental conditions Typical lifetime is dependent on stor
Electronics Forum | Thu Aug 24 13:36:07 EDT 2000 | Dr. Ning-Cheng Lee
Regarding the boiling point, MSDS may have some infomation reflecting that. Other description such as long stencil life and long tack time may also reflect. Wetting rate typically is not stated in product data sheet. You will need to determine it y
Electronics Forum | Fri Jun 29 09:58:19 EDT 2001 | edmentzer
We use 30 and 32 gauge PTFE wire. The insulation will not melt with normal hand soldering temps. The wire was made by Thermax/CDT. Their phone number is 800-423-5873. The only problem with the wire is that is hard to glue to the board. We use Ta
Electronics Forum | Fri Jun 29 09:58:35 EDT 2001 | edmentzer
We use 30 and 32 gauge PTFE wire. The insulation will not melt with normal hand soldering temps. The wire was made by Thermax/CDT. Their phone number is 800-423-5873. The only problem with the wire is that is hard to glue to the board. We use Ta
