Electronics Forum: amps (Page 2176 of 7890)

Universal Advantis

Electronics Forum | Wed Jan 18 14:48:40 EST 2006 | PWH

Dual lane 8mm prec. pro feeders are capable of being set for 2mm or 4mm index, correct?

Universal Advantis

Electronics Forum | Tue Jan 31 15:54:50 EST 2006 | vickt

PWH FYI...All current cart shipments are 13" reel compatible. A few single lane 8mm feeders is not a bad thing to have along with the 7" DL, as they can handle both. T.Vick UIC

how to compute the inductance value of sectoral winding of coil

Electronics Forum | Fri Jan 13 00:26:52 EST 2006 | arnold

in computing inductance of core i use L = (NxN)x AL value of core. is it the same for coil that has sectoral winding.

how to compute the inductance value of sectoral winding of coil

Electronics Forum | Fri Jan 13 06:48:31 EST 2006 | pjc

http://www.qsl.net/in3otd/indcalc.html No mention of sectoral winding though.

BGA rework using Tacky Flux

Electronics Forum | Fri Jan 13 11:57:51 EST 2006 | james

I am reworking some BGAs and just trying to find the easiest way to do it. Can you use tacky flux without solder on the pads to reflow? or do you have to have solder on the pads before placing the BGA to reflow? Any info is appreciated. thanks

BGA rework using Tacky Flux

Electronics Forum | Tue Jan 17 08:12:44 EST 2006 | DannyJ

Dave, I would also like to thank you for the links. As well, I was not aware of this phenomenon. Excellent reads! Dan

BGA rework using Tacky Flux

Electronics Forum | Tue Jan 17 21:31:48 EST 2006 | KEN

Agreed. Some research sugests the "flexibility" of the joint(s) is reduced with flux only resulting in premature failure as compared to standard paste + ball reflow processes. However, this does not mean it is not a reliable method. Relibility req

electrical check PCB

Electronics Forum | Fri Jan 13 14:21:56 EST 2006 | chunks

We always have the board house do it. Why catch bad board for them? Don't let them push you around.

Lead process with Lead-free capacitors....any problems?

Electronics Forum | Sat Jan 14 13:30:38 EST 2006 | mrduckmann2000

Has anyone experienced problems soldering Kemet lead-free ceramic capaciotrs will still using the old lead solder paste. We are seeing factures in the solder joints? Any ideas? Thanks.

Screen Printers

Electronics Forum | Sat Jan 14 20:20:03 EST 2006 | Manyhats

Hi, I'm looking for a new screen printer, anyone have any suggestions? Something semi-auto... Thanks David


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