Hi Phil, Everyone else's responses are correct, I just want to add one component in particular. I've never had ANY luck washing aluminum caps. They are real hydroscopic and sometimes even post-wash baking can't help them. Just my .02 cents. Jason Gregory Software Specialist - NPI Group SCI Systems/Plant 2 13000 S. Memorial Pkwy. Huntsville, AL. 35803 (256) 882-4107 x3728 [log in to unmask] >>> [log in to unmask] 02/16/01 07:40AM >>> Hi all, I don't remember if I posted this question in the past months, but I'll repost to get a fresh answer. Are there any components (pth) that can't be washed in an aqueous system? Over the years we've had problems with electrolytics, polystyrene bodied caps and small board mount relays. Does anyone have experience with thermal compound or other thermal management materials in aqueous clean? Oh ya, the system I just installed is a closed loop DI water wash with no chemicals. Phil Nutting Manufacturing Engineer Kaiser Systems, Inc. High Voltage Power Supplies That Work(tm) 126 Sohier Road Beverly, MA 01915 ph: 978-922-9300 fx: 978-922-8374 [log in to unmask] --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------