Electronics Forum | Wed Nov 06 10:17:45 EST 2002 | davef
In order from best, better, good * Lowest purchase price: cartridge, jar, syringe * Ease of inventory control: cartridge, jar, syringe * Flexibility of use: jar, syringe, cartridge * Ability to dispense by hand or machine: syringe * Cost to get paste
Electronics Forum | Thu Nov 07 04:24:24 EST 2002 | Yngwie
Thanks for the reply guys...It was much appreciated. On syringe or Cartridge - what about the impact of flux migration, there was a talk about, periodically we need to turn the cartridge or syringe upside down to ensure the metal content & flux are a
Electronics Forum | Tue Mar 07 14:23:21 EST 2006 | billyd
I think it has a whole lot to do with the heat applied, and the paste type. It was a seriously populated, very thick board, so we had to go big with the heat just to make 240-ish. That produced voids maybe 45 or 50% of the ball size. We knew immediat
Electronics Forum | Wed Jun 27 11:13:44 EDT 2012 | mosborne1
We are seeing PLCC socket leads not soldered in our SMT process. We are using a KIC thermal profiling device and we are on 50% greem light process window. All other solder joints on the board looks great. The solder flowed what looks like perfect on
Electronics Forum | Thu Jun 28 09:54:06 EDT 2012 | mosborne1
Dave, They rework fine. All solder joints on the whole board look great especially for lead free sac305. Here are the reflow specs: SAC305 no clean solder paste – Kester EM907 Kic thermal profiling device – 50%process window green light profile. • M
Electronics Forum | Mon Nov 07 07:43:56 EST 2005 | pjc
No way I've ever heard to remove mositure from solderpaste. What is the R.H. in your factory? Are you in the tropics? Does you printer have an enclosed print area like on an automatic machine, or is it semi-automatic and exposed to the room air?
Electronics Forum | Wed Nov 09 22:03:33 EST 2005 | laxman
Hi Amol, We are in South part of India.basically we are basically EMS providercatering to the needs of our Overseas customer and partiallytodomestic market. We are also providing complete manufacturing solutions including cable harness, enclosure as
Electronics Forum | Tue Mar 07 20:48:59 EST 2006 | rbodmer
Craig. i spoke with a process engineer today and he told me that if you mix pb and non pb it may work but may cause premature failures if in a thermal cycleing environment. failure cause may be micro fractures.