Morning All, I've just had a problem that I've seen before, but when I seen this in the past it was with Tin/Lead soldering, this time it's with Lead Free SAC soldering. We're building a board for a customer and one of the caps called out is TDK PN# CGA3E2X7R1H472K080AD. It's a cap made for conductive epoxy and has AgPdCu terminations. Well I missed it in the BOM and we've already built the boards. It was brought to my attention that our rework operator was having trouble getting the caps to solder and wanted me to take a look at them. As soon as I seen them I went; "Oh crap..." and then pulled up the datasheet to verify my suspicions. Here's a photo of the cap: http://stevezeva.homestead.com/TDK_AgPdCu.jpg So I made the call that the caps needed to be replaced, with a more suitable cap like this AVX PN# 06035C472KAT2A. It has a Tin-Nickel termination and has a X7R dielectric, and is also 4700pf +/- 10%. Some of the existing caps have solder wet to them, but the solder joints are very minimal. Knowing how bad these leach I'm leery about leaving them on the board. Should they be left on the board if they have a minimal solder joint? The ones that have not wet cannot be touched-up, as soon as you hit them with a soldering iron the termination dissapears. Right now we're waiting on the customer to approve the AVX cap. Steve -- This email and any attachments are only for use by the intended recipient(s) and may contain legally privileged, confidential, proprietary or otherwise private information. Any unauthorized use, reproduction, dissemination, distribution or other disclosure of the contents of this e-mail or its attachments is strictly prohibited. If you have received this email in error, please notify the sender immediately and delete the original. ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________