Electronics Forum | Fri Jan 04 15:47:27 EST 2002 | nwyatt
As mentioned before, it really does depend on the type(s) of machines you are using. Unicam and Fuji teamed up to bring us Fujicam, which is geared towards Fuji machines, but will also work with Panasonic, Universal, and (I think) Siemens. It has a
Electronics Forum | Wed Jan 02 12:32:24 EST 2002 | cebukid
What is the rule-of-thumb on wave profiling Ceramics? I've used 2 methods: 1.) putting the T/C on the lead, and get a pretty good delta (within 50-80 deg. before hitting chip wave), well within manufacturer's spec. 2.) Right on the part body.
Electronics Forum | Wed Jan 02 13:31:55 EST 2002 | PeteC
The rule-of-thumb is to follow the flux mfg.'s recommended profile to achieve their specified top side PCB temperature before making contact with the wave. Typical top side PCB temps are 100-120deg.C. Your wave contact time should be around 2 seconds
Electronics Forum | Wed Jan 09 08:36:13 EST 2002 | marquesj
For Pick & Place machines you have Siemens Machines, visit - http://www.siplace.com They are good machines and they have a nice support For loader and unloader you have Nutek visit, - http://www.nutekholdings.com/A5581E/hpage.nsf/Main!OpenFrameSet
Electronics Forum | Thu Jan 10 07:16:41 EST 2002 | Dmitry
Dear Collegues! I would like to know more information about prices for Contract Manufacturing of PCBs in USA. For example, who can tell us what is reasonable price for assembling following PCB: 75x150mm, one sided, 1 BGA, 4 TSOP 54mil, 200 SMD 0603/0
Electronics Forum | Wed Jan 16 15:13:24 EST 2002 | dougt
The Industry has just come out with some standard that includes a "test board" that will be used to compare one machine to another (we have been refering to it as an IPC board). The board has components spaced from a smaller to larger pattern and at
Electronics Forum | Sun Jan 20 21:03:34 EST 2002 | peterson
Hello everyone! We just completed some 16-layer boards and noticed (after wave soldering) that there are some unique, white-ish discolorations. It looks as if someone layed their finger at weird angles on the groundplane areas. It is NOT finger prin
Electronics Forum | Wed Jan 30 12:22:06 EST 2002 | jax
Clark, The universal GDM should handle your application with ease. Although not as accurate as an archimedes screw, the positive displacement pump of your GDM will still be well within any tolerances if maintained and operated properly.. Not to me
Electronics Forum | Sat Feb 02 08:55:55 EST 2002 | davef
I'd don't believe that the reels need to be ESD protective material. The carrier and cover tape have resistivity and materials specifications. Start with EIA-481. In past threads on SMTnet, we have discussed problems in picking components that wer
Electronics Forum | Mon Feb 11 22:05:44 EST 2002 | davef
You may not find a supplier with an "out of box" solution. But you might be able to jury-rig something without too much pain and cost. Try this: * Buy a fairly brainless feeder [like an old quad feeder] from an used equipment supplier / broker [sea
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