Hi Phil! The latest and greatest information on tin whiskering phenomena was given by Mike Toben and Rob Schetty at the IPC Fall meeting in Orlando. Their presentations are contained in the Conference proceedings. Also check out this paper: http://download.lead-free.org/downloads/Baudry_STMicro_FIB_LeadFree_Plating_Analysis.pdf The researchers used Focused Ion Beam (FIB) microscopy to get a view of the "root" of a whisker (after seeing the pictures I now know what I want for Xmas!). The FIB paper correlates very well with the Toben/Schetty presentations - we might be finally getting close to understanding the cause of tin whiskering. Dave Hillman Rockwell Collins [log in to unmask] "Crepeau, Phil" <[log in to unmask]>@ipc.org> on 10/25/2001 06:25:52 PM Please respond to "TechNet E-Mail Forum." <[log in to unmask]> Sent by: TechNet <[log in to unmask]> To: [log in to unmask] cc: Subject: Re: [TN] Adjusting the alloy composition in the solderpot hi, does reflowed tin grow whiskers? i thought whiskers grew from plated tin that's under stress. i also thought that one way to correct this was to reflow the plated tin. phil -----Original Message----- From: Bogert [mailto:[log in to unmask]] Sent: Thursday, October 25, 2001 3:13 PM To: [log in to unmask] Subject: Re: [TN] Adjusting the alloy composition in the solderpot Wrong. Pure tin will grow tin whiskers. --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------