Electronics Forum | Tue Apr 29 15:04:08 EDT 2014 | gregcr
Hi All, We will be building out a new production area and am looking for your opinion on what flooring system to install. We currently use ESD VCT tile that was installed about 16 years ago. The area will be SMT equipment as well as some assembl
Electronics Forum | Sat May 03 10:20:47 EDT 2014 | proy
https://groups.yahoo.com/neo/groups/Assembleon-smt/info See above, I have created a yahoogroup for Assembleon, philips, Yamaha users (a while ago I created a yahoogroup for zevatech and have since moved on, but it is still alive with some 75 active
Electronics Forum | Sat May 03 14:06:25 EDT 2014 | jyo_409
What are the possible reasons for electrolyte leakage What is the purpose of the vent in the capacitor? Why vent is not being maintained for all types / values of the capacitors? What is the significance of the end seal configuration. Why end seal co
Electronics Forum | Thu May 08 19:52:40 EDT 2014 | hegemon
There are many different style LGA packages, but don't sweat it. Stick with the manufacturers recommendations for PWB pad geometry for a start. Voiding can be reduced by careful profiling, and also by pre-tinning the devices. QFN style packages can b
Electronics Forum | Fri May 09 14:40:38 EDT 2014 | hegemon
I might start with the equivalent 4 or 5 mil stencil and 1:1 on the apertures. If voids are too prevalent, then I would tin the pads of the device, remove the solder, and then solder as above. You may have another hurdle, in that the resulting stan
Electronics Forum | Fri May 09 05:09:41 EDT 2014 | col_d
We're having an intermittent fault with a QSV-1 where it will on occasions oscillate violently during a run and this usually results in 1 or both Z-rods being destroyed, along with the nozzle currently fitted. This has been on and off for the last 2
Electronics Forum | Mon May 12 04:26:00 EDT 2014 | gazelle
Hello - I am looking for a source to supply low thermal EMF solder - can anyone provide pointers ? In the past a cadmium - lead alloy was used for this, but these are banned (RoHs) ... - the aim is to minimize thermo-couples on a very sensitive 4 lay
Electronics Forum | Tue May 13 08:59:13 EDT 2014 | gazelle
Hello davef - could it be you are confusing low thermal emf (Seebeck coefficient) with low temperature solder ? I am looking after solder wire and paste with low Seebeck coefficient - cadmium based alloy was OK but banned in europe due to RoHs direct
Electronics Forum | Tue May 13 17:53:54 EDT 2014 | anvil1021
Hello Michel...this might be a bit of a battle finding the low thermal EMF material that you are looking for. The first one that comes to my mind is Bismuth Selenium Telluride, with either a nickel or cobalt doping agent. Silver went away from this
Electronics Forum | Mon May 12 12:58:07 EDT 2014 | emeto
Hello all, I have a diode(gold plated)on some assemblies that gives me a a hard time. The paste is wetting too good and climbs the lead of the component and touches the body which is a defect. I just wonder what if there is a way to heat the board e
