We have some paper phenolic PCA's in our future and I was wondering if there are any drastic differences to processing vs. FR-4 assemblies. Some of the questions I have are the following. 1.) Do mixed paper phenolic assemblies have a higher defect rate than FR-4 mixed technology assemblies? 2.) What are the defects commonly seen on the paper phenolic assemblies which you do not get with FR-4 PCBs' and PCAs'? 3.) What is the largest panel size you can run with .062" material? 4.) Does every paper phenolic panel require wave soldering pallets? 5.) Is there any problems with water washing of paper phenolic boards? 6.) Is there any stretch or warp of the PCB through the thermal processes? 7.) Is there any special fixturing required for reflow soldering? 8.) Are the PCB's processed as single images or panelized as they pass through the SMT and/or TH processes? 9.) Is there any special handling processes or cleaning processes prior to assembly? Any special process during or after assembly? 10.) With respect to the copper adhesion to the PCB, is rework more difficult (than FR4) due to the ease of pulling pads off the board? 11.) Does the PCB material effect the price that the CM charges for building the assembly? If so, why? 12.) What are the changes to the reflow profile? Is the soak time longer or shorter? Is the max temp setpoint different than FR4? Thanks In Advance: Steve O'Hara [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************