Electronics Forum: inductors (Page 1 of 14)

Green inductors

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

Green inductors

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.

Green 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

Green inductors

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 >

Green 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

Green inductors

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.

Green inductors

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

waterwash of inductors

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.

waterwash of inductors

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.

waterwash of inductors

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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