Electronics Forum | Tue Jan 23 11:42:05 EST 2001 | aiscorp
In the past when the electronics industry was only beginning to mature, many companies considered CIM systems or even just basic CAD/CAM functionality a luxury of only the large OEM's which would develop their own tools. Now, with the competitivenes
Electronics Forum | Mon Jan 29 04:27:47 EST 2001 | wbu
Hi Sal, taking the dwell time as parameter to control seems to me unessary. Dwell time is a function of other settings that can be controlled (adjusted) more easily (conveyor speed, wavehight-settings, angle). Although dwell time is essential it�s I
Electronics Forum | Tue Jan 30 14:59:07 EST 2001 | MikeF
I thought Contact Length refered to the travel distance the board stays in contact with the solder. I measured it using a tempered glass plate that also showed me if I had an even footprint of contact with the wave. By this definition, conveyor spe
Electronics Forum | Mon Jan 29 12:52:32 EST 2001 | davef
BL is correct. The two issues are: 1 How thick are you putting the NC residues on your boards. 2 Some NC flux residues work with some conformal coats. Contact Graham Naisbatt [Concoat Ltd +44 (0) 1276 691100 Fax:+44 (0) 1276 69122 graham.naisbitt
Electronics Forum | Wed Jan 31 14:31:55 EST 2001 | Cal
The size of a feeder is determined by the width of the carrier tape the components come in. i.e. If you measure the width of the tape with a precision ruler or calipers that measurement will be the feeder size. Also, when you order parts the tape siz
Electronics Forum | Tue Feb 06 18:12:46 EST 2001 | davef
Pete makes great points. Taking a slightly different angle, use your placement equipment's software to help you. It keeps track of the number of picks and attempts for each location. Study these numbers for a week and determine the capability of p
Electronics Forum | Thu Feb 08 12:02:15 EST 2001 | slthomas
After reading the variety of responses, I feel moved to ask if you're you talking about what are occasionally referred to as solder beads (mid-chip solder balls, attached to the waste line of your chip caps and resistors) or the solder balls that ten
Electronics Forum | Wed Feb 07 21:58:38 EST 2001 | davef
We are reviewing our shelf life policy and have the following items listed as shelf life sensitive: Printed circuit boards, peelable solder mask, solder paste, moisture sensitive parts, multiwire printed circuit boards from Icon or Hitachi, NiCd batt
Electronics Forum | Thu Feb 08 12:56:07 EST 2001 | pk11
Hi, I am a new engineer and I will be doing some of the ordering of stencils in the future. I am inquiring about the possibility of making the stencil fiducials through hole. We are forever coloring in the fid with a black sharpie marker so that th
Electronics Forum | Thu Feb 15 07:04:59 EST 2001 | CRAIGS
Antonio, one possibility I have seen before on BGA shorts was due to chain slippage on the reflow oven due to worn gearing, the slippage was not severe enough to move other SMT devices but was enough to disturb the molten solder under the BGA
