Electronics Forum | Wed Oct 20 17:22:48 EDT 1999 | Dave F
Dunno about 310M flux, but I share your concerns about CU56. You might rethink your selection of solderability perservative, because Enthone: * CU56 allows one thermal cycle. * CU106A allows three thermal cycles. Good luck Dave F
Electronics Forum | Tue Jun 08 05:02:09 EDT 1999 | Charlie Thornton
Can anyone please help me locate details on maximum allowable temperatures of components when passing through a reflow oven. I think I want the thermal profile for the part, or a source or standard which will allow me to check if I can safely reflo
Electronics Forum | Thu Feb 04 21:17:41 EST 1999 | Chris G.
| What allowances are people using out there for components off-pad, we currently use 50% of lead width without breaking trace/component clearances but we have a customer demanding 25% allowance ? | IPC states: 50% off pad for class 1 and 2 25% off
Electronics Forum | Tue Dec 18 15:05:58 EST 2001 | blnorman
What is the maximum allowable thermal ramp rate for wave solder. We have a "short" machine used for selective soldering. To get the boards up to temp, we need to exceed our normal 2�C/sec. Are there any IPC documents governing this process? Anyon
Electronics Forum | Sun Oct 13 22:20:50 EDT 2002 | craigj
Have had a request from a customer who wants to use component reference designators of 6 or more charactors. They have a good reason for this from a design point of view but it becomes a problem at manufacture. Our machine (also MRP system) only allo
Electronics Forum | Wed Dec 11 11:55:54 EST 2002 | larryk
Lets take it a step farther. What about letting them use tapes or CDs in those walkmans? Would you allow them on the factory floor? Any ESD issues with the plastic cases? If not, would you limit the amount of tapes or CDS they could have with them?
Electronics Forum | Wed Feb 12 17:10:02 EST 2003 | Mike G
Most conveyors are sold by the inch. I allow for no more than one inch gap between the end of the conveyor and the next piece of equipment. If you trust your measurements, 1/2 inch is best. This will allow for the smoothest transfer possible of small
Electronics Forum | Tue Aug 26 21:20:58 EDT 2003 | iman
You may check with the TDS of respective "active parts" IC manufacturers for their recommended no. of thermal cycles permissible in the reflow process. Last I checked 3 cycles for our RF-apps IC was still allowed. For 48pin-QFPs this can be allowed
Electronics Forum | Mon Feb 14 13:25:52 EST 2005 | gregp
EIA-481 standard allows the maximum pitch on tape to be 4mm less than the tape width (12mm width and larger). So it is within the standard allowances. As for how common 20mm pitch on 24mm tape is I can not say. I am surprised a 24mm tape feeder ca
Electronics Forum | Tue Mar 01 09:20:42 EST 2005 | rlackey
I remember Metro Nozzles mentioning that they are bringing out a new "blade" nozzle soon to allow closer density placement of 0402's & 0603's than the 08MPF allows. Also noticed that you get far better placement with a 1 mil camera than a 4 mil, coz
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