My friend pass me another question. I hope someone can give some inputs. The application is a mobile phone keypad (gold plated), Motorola's engineer insists that it is not acceptable if we can see the patten of glass fabric. The microsection shows there is no weave exposure or weave texture(use 0.014" H/H laminate,construction is 2 ply of 7628) 1. Is it true that the circuit board surface is more rough if we use 7628? 2. What can do to improve the surface quality? Use 2116 instead of 7628 or modify the resin content of 7628 prepreg? 3. Is there any related specification? Thanks in advance! Shirley __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ --------------------------------------------------------------------------------- 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 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 ---------------------------------------------------------------------------------