Electronics Forum | Mon Feb 10 16:59:57 EST 2014 | hegemon
It is sort of a self answering question if you come in from the solder paste angle. First....start gathering data. Check every day, or every new paste jar, for: Storage conditions (temp), paste expiration date, ambient temp and humidity where yo
Electronics Forum | Mon Jun 22 16:33:59 EDT 2020 | davef
Measuring solder static paste viscosity is fairly easy to do. IPC TM-650 .4.34, Solder Paste Viscosity lists the method and equipment. Just don't tell your customer that it is meaningless because the solder paste is printed in shear, not statically
Electronics Forum | Mon Jun 22 15:53:35 EDT 2020 | cyber_wolf
This would be a highly unusual "requirement." In house checks on paste viscosity went the way of the buffalo years ago. The question to your customer should be: why ? All of the mainstream paste suppliers should be able to supply you with a COC th
Electronics Forum | Fri Jun 19 22:10:18 EDT 2020 | davef
Don't get yourself wrapped around the measure solder paste viscosity axel. Observe the paste handling and preparation instructions provided by your solder paste fabricator.
Electronics Forum | Tue Jun 09 07:10:46 EDT 2020 | ameenullakhan
Hi Team, Please recommend some good solder paste viscosity meter.Which easy to use and user friendly. Regards, Ameen
Electronics Forum | Mon Jun 22 05:04:57 EDT 2020 | ameenullakhan
Hi Dave, Thanks . But it's one of our customer requirement to have in house solder paste viscosity measurement. Regards, Ameen
Electronics Forum | Tue Jun 23 05:48:17 EDT 2020 | ameenullakhan
Hi Sr Tech, Yes we do have a COC for every solder paste with viscosity measured. But some customers have there unique requirements. And its not useful arguing with them. Regards, Ameen
Electronics Forum | Thu Jul 22 07:52:37 EDT 2004 | Chris L.
Hi Grant, The purpose for allowing the solder paste to reach room temp before production is to reduce the amount of water absobtion from the air. (e.g. a cold glass of water "sweats" on a humid day)The purpose for mixing is to make the viscosity more
Electronics Forum | Thu Oct 27 00:45:41 EDT 2005 | pavel_murtishev
Good morning, I can recommend to use solder paste softeners, which can prepare solder paste for printing process. Softeners rise paste temperature by means of pseudo-planetary motion. Therefore, solder paste reaches room temperature during only 15
Electronics Forum | Tue Jul 27 07:58:21 EDT 2004 | mmjm_1099
Hell as for storing the used paste have someone bring in baby jars. Yes I agree thats alot of wasted money if you throw it away every day. Plus since I'm on the subject why not use a bottle warmer? I persoanlly store our paste in a mini-fridge (along
