Electronics Forum | Thu Dec 15 21:23:57 EST 2005 | davef
Welcome. A day and a half seems like a very long time to leave paste on your stencil. We'd expect that the volitiles in the flux would have left the building in that time, making the flux less active. We start with fresh paste at the beginning of
Electronics Forum | Fri Dec 16 06:46:12 EST 2005 | Rob
How about keeping a fridge near the line and only putting on the stencil what is needed, then topping up from the jar as & when? As soon as the paste hits the stencil flux will evapourate, and all of that time spent by people in labs developing comp
Electronics Forum | Fri Dec 16 08:11:39 EST 2005 | rlackey
Hi Dave, Sorry, blonde moment. For our prototype line we decant the paste into a cleaned out pot, that goes under the printer hood, with the lid left on, the rest stays in the fridge until it starts to run down. If we get it wrong we definitely
Electronics Forum | Sat Dec 17 04:45:43 EST 2005 | aswsteven
Hi Guys My is in line system, printer DEK 265 stencil 4 mil only have to mount 20 components but giving me problem. After a month or so on this line still having paste problem about 1.5day need to change new paste. We are using whole jar 250g but do
Electronics Forum | Mon Apr 17 22:56:10 EDT 2006 | davef
Have you considered singulation? It uses a press and a peculiar die to seperate the useful cicuit from the panel. Suppliers include: * Wand 847-459-2400 F2421 * Circuit Technology 708-705-2140 f2141 John Bambule * Pioneer - Dietecs 781-682-7900 F03
Electronics Forum | Tue May 03 20:01:24 EDT 2011 | city4497s
It a recent occurance and it happen randomly on other area. I'm using senju M705-GRN360-KV and Indium SMQ 90 Leadfree solder paste, we have been using both paste for 4~5 years. We have asked the oven supplier to perform maintenance and inspection, pr
Electronics Forum | Thu Jan 29 09:29:42 EST 2015 | rgduval
In general, it depends on what you're working on. Boards with a higher thermal profile might require higher temps. But...the usual answer is...set your irons to the lowest temperature possible that still achieves the goal. We usually keep our ir
Electronics Forum | Tue Jul 24 17:29:37 EDT 2018 | action_101
Hello, If anybody has a TECI PJ1A programmer that they no longer need or know of someone that might have one lying around then please let me know. We are willing to pay top dollar for one of these older programmers. This specific programmer was used
Electronics Forum | Tue Dec 17 18:44:13 EST 2002 | davef
Two suppliers of singulation machines are: * Wand 847.459.2400fax2421 * Circuit Technology 847.705.2140fax2141 Search the fine SMTnet Archives for additional discussion. Also, look here: http://www.assemblymag.com/execute-vSection-Articles-vSu
Electronics Forum | Wed Jul 27 22:43:10 EDT 2005 | crishan
Hi all, Having a major problem with an IC being placed upside down. We pick up the fault at AOI. We have check several reels and the component is not placed upside down by the supplier. Where should I start looking; 1. Are we using an incorrect fee
