First, beware specifying laminate material for lead free soldering by Tg. You can spec a 170 Tg material with an epoxy that breaks down at soldering temperatures, reducing it's Tg to about 130 after a single reflow operation. Or you can spec a 140 Tg that maintains it's properties over multiple passes. Most reflow profiles are not long enough to cause the Tg to be significant. Far more important are the CTE, Td, CAF, non-dicy curing..... When this first became an issue, many companies went right to the Isola-410 and comparable materials. These are 170Tg, but also have higher Td, lower CTE, are non-dicy, and less susceptible to Cathode-Anode failures. As a response to RoHS demand, some suppliers are now marketing a product with similar properties, but a Tg around 130. For a normal single heating operation, they claim these work, and they are a bit cheaper. We have seen inconsistent price increases, but it's between 10-30%, partly because we were somewhat underspecified in the past, allowing fabricators to shop around a bit. -------------------------------------------------------------------------------Leadfee Mail List provided as a 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 Leadfree To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL) Search previous postings at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -------------------------------------------------------------------------------