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 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 | 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
Electronics Forum | Mon Feb 20 07:57:53 EST 2006 | dpmilk
Thanks Rob. We've been in contact with Coilcraft, but haven't gotten anywhere, yet. We'll check out the other coils. We started using Coilcraft because of their high Q.
Electronics Forum | Fri Feb 17 05:01:46 EST 2006 | Rob
Ask the distributor (or coilcraft) what the termination material is & if they do alternative ones. These maybe from old stock. If you get no joy have a look at Epcos & Murata who both have wide ranges of surface mount inductors.
Electronics Forum | Mon Feb 20 08:25:13 EST 2006 | Rob
No problem. If you get no joy you're going to have to change the footprint to a 1206 or 1210. Murata have a range of high Q value inductors (50-60) & from memory Toko used to be pretty hot too. The terminations on the coilcraft part are listed a
Electronics Forum | Wed Aug 01 02:17:00 EDT 2001 | djarvis
Anyone placing micro,mini,midi spring inductors (as can be seen on http://www.coilcraft.com) with an FV7100? I can get the little suckers to "test" all day long, but soon as I go into production mode the vision system rejects around 20%. I've tried c
Electronics Forum | Wed Aug 13 19:57:05 EDT 2014 | suroy
After wash cycle, some of the inductors are open (broken wire). Resistance across the two ends should be below 4 ohms (normal) however on broken wire shows above 200 ohms. I am wondering if anyone else has seen this problem. We are using High-Reliabi
Electronics Forum | Fri Aug 15 12:40:49 EDT 2014 | davef
Hi Dave, We can help. Please ask this consultant to contact us directly. There are a number of possible reasons and we'll have many questions to get to the root cause. We are always happy to help solve customer problems. Thanks and Best Regard
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