Electronics Forum | Wed Jul 09 13:48:03 EDT 2003 | russ
Sam, You may want to be careful with your analisys, reducing paste volume also reduces flux volume. Flux is there to promote and aid in wetting. by reducing flux you may have initiated the poor wetting yourself with the experiment. Just anothe
Electronics Forum | Thu Aug 31 05:20:08 EDT 2000 | dougie
Thanks for your help guys. We've V-scored boards in the past and it led to difficulties, as mentioned with the depth of groove etc... Our PCB's vary in shape and size drastically, and I mean drastically. So it looks as if a little more though on wh
Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey
Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w
Electronics Forum | Thu Dec 05 05:39:05 EST 2019 | oxygensmd
I know your application isn't BGA but the data sheet also mention about the peak temperature - 235 Celsius. For the LEDs you can reach higher temperature and I recommend to reach 225-235 Celsius. You will get significantly better results because the
Electronics Forum | Thu Feb 24 16:14:46 EST 2005 | davef
Rob: Why aren't the board houses over there going to lead-free HASL [not that HASL is the most wonderful thing on the planet]? What's the price delta on an unit basis for a x-HASL, now imm Ag board? Anyhow back to the point, so, you're proposing t
Electronics Forum | Thu Sep 13 01:37:15 EDT 2007 | pavel_murtishev
Good morning, Overprint, i.e. make stencil openings for your LED larger. Add printer accuracy to aperture size so that paste would always cover the pad. BR, Pavel
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 | Tue Feb 03 12:39:16 EST 2009 | markhoch
Not sure what your job quantity is, or how many total parts you have to place, but we've had similar issues in the past trying to place domed LEDs. We had better luck cutting the tape into 25 or 50 piece strips and using double-sided tape to put the
Electronics Forum | Fri Nov 24 05:38:46 EST 2017 | jineshjpr
Can anybody suggest how to reduce 0402 LED tilting as I am using Convectional Reflow oven with 10 Heating zones and controlling the solder paste with 4.2 mills paste height
Electronics Forum | Wed Sep 12 22:57:02 EDT 2007 | lito_visaya
Anyone, We are an electronic assembly contractor and one of our customer requires a 100% solder coverage on pads for their products. We are using flex pcb and we mount only one component (LED for backlight application). The solder paste we are u
