Electronics Forum | Tue May 17 19:55:14 EDT 2016 | ttheis
We have been pretty happy with second hand Universal Instruments GSM machines from the mid 90's. They are pretty affordable on the used market for a small company like ours and there seems to be a good supply of new and used parts. Support is good fr
Electronics Forum | Tue Jan 28 16:34:34 EST 2020 | spoiltforchoice
I genuinely think component verifier on the machine is the optimum solution. Even then it can probably get caught out, we build some instrumentation that can have 10K 1%, 10K 0.1% and 10k 0.1% 2ppm, a verifier won't catch those getting mixed up,likew
Electronics Forum | Fri Oct 08 02:19:01 EDT 1999 | Brian
| Is anyone aware of a web page for military spec's? I am looking for Mil-P-28809. | | Thanks, | Mike Demos | MIL-P-28809 is definitely obsolete. Not only obsolete, it was possibly the most scientifically flawed standard ever to to be printed. I
Electronics Forum | Thu Apr 01 03:04:22 EST 1999 | Scott Davies
Dave, Thanks for the interest. Basically, we looked at this project as a straight swap, i.e. printing the glue on the PCB using a Dek screen printer instead of our current method of dispensing glue using a Camalot dispensing machine. For the PCB we
Electronics Forum | Mon Mar 01 12:50:47 EST 1999 | justin medernach
| Hello! SMT professionals, | | I do not know if anyone posted this question before. | Last week, I reflowed our newly designed thin Rigid-Flex pcb with 0.040" thickness. I found all of pins of a TQFP48 ic did not get wetted. I could see on the hee
Electronics Forum | Mon Mar 01 22:37:01 EST 1999 | Dave F
| Hello! SMT professionals, | | I do not know if anyone posted this question before. | Last week, I reflowed our newly designed thin Rigid-Flex pcb with 0.040" thickness. I found all of pins of a TQFP48 ic did not get wetted. I could see on the hee
Electronics Forum | Tue Apr 13 22:48:11 EDT 2004 | Ken
I assumed the balls were tin/silver 221C or tin/silver/copper 218C liquiduous....but, this is obviously not the case. It looks like you balls are almost pure tin (mp=238C) You are correct. This is exactly the same as using 10/90 high temp balls o
Electronics Forum | Thu May 26 15:59:40 EDT 2005 | davef
Let�s not get drawn into making more of the amount of training required in order to be able to develop an effective reflow recipe than is necessary. A low-skilled operator with about one hour's training can setup the solder reflow oven. Consider co
Electronics Forum | Thu Aug 02 22:33:24 EDT 2007 | simsj
We've had some experience with Universal's machines as well. Aside from the mechanical problems you're experiencing, that level of control hardware is susceptible to power spikes/fluctuations. Save yourself some trouble later on and get a good UPS.
Electronics Forum | Wed Oct 12 10:55:16 EDT 2016 | hken
Like many other circuit assemblers we cross reference an incoming reel of components Manufacturers PN (MPN) to our company’s Internal Part number (IPN). For years I've been scanning the MPN & Qty on the manufacturers label and using a simple database
