Electronics Forum | Sat Sep 27 10:26:39 EDT 2008 | realchunks
Can you have an outside vendor source it for you? Kind of like an "in house store". Besides paste, they would also supply you with all your other "dated" material. That way you only get charged for what you use. Then make sure your operators chec
Electronics Forum | Wed Oct 01 19:23:52 EDT 2008 | paligora
It depends on the usage , if it is regular and steady, only order when needed , we only order 2 jars when the last one is taken out of the fridge.One jar would last us about 2-3 weeks and it stays on room temperature. Ofcourse , you need a realiable
Electronics Forum | Fri Sep 26 12:16:28 EDT 2008 | jsmale
Has anyone seen this? - We have a new smt pcb with 2 x LF356 (Op-amp) IC's on it (plus others). When the pcb is flexed the O/P of each IC changes by �2mV DC. i.e. the board is acting like a strain gauge! There is no oscilation and when I replace th
Electronics Forum | Mon Sep 29 12:31:51 EDT 2008 | omid_juve
Thanks but we have QFP208 package here that after the reflow soldering during to the bad coplanarity of these devices some pads doesn`t have enough solder or not soldered. so we decided to use a qfp nozzle that can be placed on a QFP pads and use a
Electronics Forum | Tue Sep 30 17:56:38 EDT 2008 | davef
Some of the popular handheld digital microscope seem to be aimed at home science projects. Units that are priced similar to the Bodelin Technologies ProScope are: * Celestron 44300 Handheld Digital Microscope * Orion Microxplore PC200 Digital Handhe
Electronics Forum | Mon Nov 10 22:15:53 EST 2008 | fctassembly
Bob The actual process for converting from SAC305 to SN100C is pretty painless. Basic steps: 1) make sure your solder pot is at temp 2) de-dross 3) pull pumps/flow duct(s) and clean 4) purge pot of SAC material 5) remove any remaining dross/alloy i
Electronics Forum | Thu Oct 02 08:24:32 EDT 2008 | rway
If you want to go really cheap, you could try Pace Systems. You can get a three channel system, hot air, desolder and soldering iron. Or any other combination handpieces that they offer, for around $3K. They also have power supplies with a single
Electronics Forum | Fri Oct 03 16:22:38 EDT 2008 | alien
For plain old QFPs in small quantities, a temperature controlled heat gun + a decent soldering station can do the trick. In my case, Steinel HL 2010 E heat gun (handheld, but with a digital readout) to desolder. Clean up pads with solder wick. Solder
Electronics Forum | Fri Oct 03 16:51:06 EDT 2008 | waveroom
If this is a one time rework might I suggest farming it out? 100pin QFP can be taken off no problemo.. Putting it back down properly and then hand soldering??? I wouldn't want that job. You need excellent placement and imaging and your not going to
Electronics Forum | Sat Oct 04 17:06:08 EDT 2008 | alien
It all depends on the quantity and the type of product / quality requirements. Manual placement for 20 mil pitch is not _that_ hard. Another advantage of hand soldering is that you don't have to worry about the moisture level of the replacement par
