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 | 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 | Thu Feb 16 16:16:19 EST 2006 | fredc
We saw something like this in the machine shop years ago. Fumes from a soldering operation in the shop turned exposed iron and steel tools and the spindle on my Bridgport mill green. Can your supplier apply plating or a coating to the exposed parts o
Electronics Forum | Mon Feb 20 07:59:50 EST 2006 | dpmilk
We saw something like this in the machine shop > years ago. Fumes from a soldering operation in > the shop turned exposed iron and steel tools and > the spindle on my Bridgport mill green. Can your > supplier apply plating or a coating to the >
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 | 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 | Mon Feb 20 09:20:07 EST 2006 | dpmilk
It appears to us that the problem lies in the lead-free solder paste rather than the inductors. We have not found a lead-free solder that does not do this. The green is on the copper wire. We believe it gets there during the reflow. The gasses fr
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 Nov 18 15:31:01 EST 2004 | davef
We agree with an earlier poster. Your customer's a dope and should be defining the results, not the method of a process. Good luck.
Electronics Forum | Wed Nov 17 08:13:41 EST 2004 | grange GAA
We are manufacturing an NPI board for a Customer and they want us to wash the board using a Saponifier wash. However, one of the SMT parts cannot be placed through a wash process. Has anyone ever had to encapsulate a component to prevent water da
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