Sid I have had very good performance results with either Ni/Pd/Au or Ni/Pd as far as solderability and high temperature performance. These finishes are all electrolytic and the palladiuim and gold are thin, 6 to 12 microinches thick. I have had some problems with the immersion/electroless prodcut in the past and do not presently specify such. If you want further information about supplier chemisty or the finshed product, contact me. Phil Hinton [log in to unmask] ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################