Electronics Forum: loose and radial (Page 1 of 4)

Blow holes on radial parts solder joints

Electronics Forum | Thu Apr 05 12:45:45 EDT 2001 | Claude_Couture

On mixed technology PCBs, we find numerous blow holes on the solder joints of radial parts (electrolytics, LEDs, etc). The solution that works so far is to cut the leads very long in the radial inserter so that the part is kinda loose and the air in

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 09:36:17 EDT 2009 | spitkis2

Does anyone know of fully automatic pick and place machines that can pick up parts either from small pieces of cut tape (i.e. 0402's, 0603's, SOT's) or components loosely arranged on a tray (not ic's that are in matrix trays)? Application is proto

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 17:03:21 EDT 2009 | isd_jwendell

My Essemtec machine can use "restband" feeders. They are manual feeders that simulate trays, but are specifically made to hold tapes.

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 10:02:12 EDT 2009 | spitkis2

Thanks for the info. On the Mydata do you position the cut tape inside a feeder or place it on a tray of some sort? Here the environment is OEM R&D lab so a Mydata would be overkill in terms of size and cost. I was thinking of a smaller auto pick

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 12:53:58 EDT 2009 | dyoungquist

On our Mydata machine, we place a piece of scrap bare pcb next to the pcb we are loading. Using double sided tape, we attach the cut tape strip to the bare pcb, then program the machine to pick up the parts from that location. The smallest Mydata m

Are there pick and place machines for loose components?

Electronics Forum | Fri Jul 31 09:48:15 EDT 2009 | dyoungquist

You can use cut tape on Mydata machines fairly easily. We are a high mix, low volume manufacturer who has to use cut tape often as that is what our EMS customers provide. It is does take more time to load/unload than a reel does so you need to fi

tape and reel components

Electronics Forum | Mon Sep 16 12:55:27 EDT 2002 | davef

We send parts out to be tape & reeled. We do not send all loose parts out to be tape & reeled. As you would expect, we base our decision on: * T&R service company lead time * Our production schedule * Cost benefit of T&R versus some other productio

Skewed and popped components

Electronics Forum | Wed Sep 24 08:34:57 EDT 2003 | stefwitt

Even when you run a board several times, the machine may not make the same travel path every time. This in itself does not create a problem, but the vacuum on the nozzles could be different, dependent on the configuration of components on the heads.

CCGA and overprinting?

Electronics Forum | Mon Oct 15 10:51:49 EDT 2001 | davef

On over printing, the general issues are: * Paste deposits being so large that when reflowing, collapse onto many, rather than a single solder mass. * Paste expanding during heating and being close to other solder deposits and bridging [as you say].

qfp and soic joint Problem

Electronics Forum | Tue Apr 11 10:30:46 EDT 2000 | Jeremy Smith

I am having a problem with some joints on a 100 pin pqfp and few different soics on one particular board. When viewed a 8x with a "Mantis" inspection scope the joints look as though they wetted to the ic leg but when probed the leg will pop loose.

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