Electronics Forum | Fri Apr 04 09:28:59 EST 2003 | davef
Q1: Anyone has any ideas on how this post-SMT reflow solder joint could have changed to whitish joint? A1: Dunno. You need to tell us more. For instance: * What is the appearance of this white residue? [eg, glassy / coarse, milky colored / opaque,
Electronics Forum | Wed Apr 23 10:27:32 EDT 2003 | bernard
Hi Pete, What you are describing is something that will happen regardless of feeder type or machine type. When taking off a partial reel there is the potiential to lose components. It is minimised by careful handling. Yes I would agree that the Myda
Electronics Forum | Tue May 13 15:21:51 EDT 2003 | stefwitt
I know, it can be done and I participated in many acceptance tests, in which we counted even the milliseconds. However, my vision had a bit shifted, since the time the Motorola�s and Flextronic�s dumped all these high volume machines to the market. I
Electronics Forum | Wed May 07 09:31:28 EDT 2003 | davef
We use uV Dymax glue for thermocouple attach sometimes, but don't like the remainder [anal] and loosing attach, sometimes. Roger Saunders, President Saunders Technology, Inc; said: PRO: � These products are easier to use than high temperature solde
Electronics Forum | Sat May 24 21:49:24 EDT 2003 | ramanandkini
We have an electronic circuit with a miniature stepper motor, quartz crystal, Electrolytic capacitor,chip resistors and few smt LEDs. The PCB material is CEM1 with SMOBC and HALS finish. This circuit is assembled in a plastic casing and goes in to a
Electronics Forum | Thu May 29 17:48:00 EDT 2003 | jonfox
As far as I know, the limitations apply to to the manufacturing components, not the equipment per say. At this point there is no set date for the US at the national level. Basically our government is run by big businesses and their effect on our na
Electronics Forum | Sat May 31 14:33:59 EDT 2003 | kenBliss
CAL Here is another perspective. Ask what is included in the setup costs, ie. programming, stencils, setting up part number bins, bill of materials, changeover time on the line etc, etc. Then ask how much time and costs the CM is allowing for each
Electronics Forum | Wed Jun 04 20:09:01 EDT 2003 | stefwitt
The tact time is determined by the slowest machine in the line. In your case it is 4.5 min. This is the time from the board leaving the output conveyor sensor to the next board leaving the sensor. The first machine, which finishes the job in 3 min. h
Electronics Forum | Wed Jun 11 22:56:10 EDT 2003 | jgregory
OK Terrapin, Here it is, roughly half hour after I vented on your reply. I still don't like your attitude to "school" me on this subject. I've been doing this way too long. But I decided that I would satisfy your attempt at "learnin" me. First, I
Electronics Forum | Tue Jul 15 18:44:20 EDT 2003 | davef
Sam says, �The only question remaining to me is that why the failure happened after 48 hours instead of immediate failure after soldering.� Let�s recap: * Had good-looking solder flow. * Passed the initial electrical test. * Failed the later electri
