Electronics Forum | Wed May 23 18:53:20 EDT 2012 | stentech
Pick and place is not my area but I did have a customer a while ago with a similar problem. He did try different nozzles and air pressure. They use Nano protek on thier stencils. He wiped the nozzles with Nano Protek and the problem dissappeared. Onl
Electronics Forum | Wed Mar 31 10:55:42 EDT 2010 | fredc
I worked on a nozzle for one of these LEDs in the past. I seem to remember that there are raised surfaces outside the pick up area. Be sure your nozzle is not hitting them, if so you will lose vacuum. A rectangle shaped nozzle would maximize your abi
Electronics Forum | Fri Jul 29 11:31:44 EDT 2022 | jojoled
Hi Guys, I have Juki PnP machine with 2 heads, and for some reason, whatever I do, I can not make the machine to use 2independent feeders for parallel picking up single component reference by both heads from 2 feeders. Example , imagine you have a
Electronics Forum | Fri Sep 04 09:33:40 EDT 1998 | Stefan W.
| I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior fo
Electronics Forum | Sat Aug 28 14:16:18 EDT 1999 | JohnW
Doug, Have you tried running the boards at an angle to the wave of between 15 - 30 degree's ? I've done this on a few boards to eliminate short's and I believe it will work on your problem very sucessfully. Best thing to do is get your wave solder c
Electronics Forum | Wed Jul 07 10:17:33 EDT 2010 | flipit
We have this problem only with one manufacturer of LEDs. Avago LEDs give us the problems where SunLED and KingBright do not. We put a magnet under the embossed cover tape. The magnet is mounted to the feeder. Holds the part in the tape pocket. L
Electronics Forum | Thu Jan 13 15:58:50 EST 2005 | clarkk
Vikt, I'm using the LED type (leaded form). The LED is domed, but the dome is on the bottom. The surface that the nozzle picks up on is flat, and the nozzle does not extend beyond the edge of the body. The problem is in the inspection, which is rejec
Electronics Forum | Thu Mar 14 07:22:22 EDT 2013 | fredcalkins
This problem has become a real issue with the tacky silicon used in many LEDs. Cree has recomended that the pull off angle be changed for the cover film as mentioned by the previous commentor. With these new silicon LEDs they are recomending teflon o
Electronics Forum | Thu Sep 03 15:43:18 EDT 1998 | Tim Flanagan
I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior for
Electronics Forum | Tue Aug 14 15:08:32 EDT 2007 | gmoritz
pick/place head won't travel over the LED's, then you won't be able to proceed. I wasn't clear in describing my board layout; It is LEDs on one side and SMT components on the other side. I don't think we can get around the problem of stenciling
