Electronics Forum | Wed Jun 09 14:41:12 EDT 2010 | ronchap200027
Has anyone had issues with Renco inductors failing. The component I'm having problems with is a 330uH shielded power inductor. Out of 36 board failures, I have 17 that failed because this inductor failed. Most often they end up reading -1.34 uH.
Electronics Forum | Wed Oct 11 18:12:55 EDT 2023 | alexv
I don't think it's a stencil issue. You have an identical inductor next to t=it, that's perfectly straight. You have a problem in that location. I've seen some inductors be affected by slight magnetic forces in the reflow oven. Try to rotate the boar
Electronics Forum | Wed Oct 11 18:30:21 EDT 2023 | kojotssss
Thanks for the opinions! You're right, it can't be solved with a stencil. I have made investigation, the problems are related to the quality of the component land surface, one of the terminal is oxidized.
Electronics Forum | Sun Aug 10 03:41:20 EDT 2008 | eyalg
Thanks for your promt reply It was very usefull Eyal
Electronics Forum | Fri Aug 08 09:49:17 EDT 2008 | scottp
We've seen the exact same problem. The solder joints had negative wetting angles and x-sections show that the PdAg termination dissolved into the solder. We no longer allow PdAg terminations.
Electronics Forum | Sun Aug 10 03:39:21 EDT 2008 | eyalg
Thanks Pete yes we usu ROHS solder paste in our process. I agree that this termination is more suitable for adhsive bonding rather than soldering. We'll try changing the termination type as you recommended. Eyal G
Electronics Forum | Thu Aug 07 10:02:10 EDT 2008 | eyalg
We are facing low quality due to soldering opens with coilcraft inductors 0402CS-2N7XGLW. The termination used is(suffix L =RoHS compliant silver-palladium-platinum-glass frit. Did anyone had this problem in the past? Can we do better using T = RoH
Electronics Forum | Thu Aug 07 11:58:36 EDT 2008 | pbarton
We have experienced the same problem with Pd/AG and P/Ag terminations on precision resistive parts. The problem is dissolution of the termination metallisation into the bulk solder. This is exacerbated by the higher thermal profiles required for RoHS
Electronics Forum | Fri Nov 19 16:53:48 EST 2004 | grayman
Hi, We used to clean 20 pieces SMT inductors before but no problem with this process. Please confirm what type of inductors is it SMT or hole type. What type of chemical and machine you are currently using? Maybe I can help you out.
Electronics Forum | Thu Feb 16 12:07:19 EST 2006 | dpmilk
We have been using Coilcraft 1008CS inductors for several years. We have had problems with them turning green when we use lead-free solder paste. We have tried several solder pastes (water soluble and no-clean)from different manufacturers, but the
