Am I just echoing everyone else? The challenge of 4 oz copper is simply that it is rather thick, which makes conductor etching difficult, as well as later processing such as solder mask and legend printing. Mike -----原始郵件----- 寄件者: Darrel Therriault <[log in to unmask]> 收件者: [log in to unmask] <[log in to unmask]> 日期: Tuesday, May 23, 2000 03:23 主旨: [TN] 4 oz Cu |TechNetters, | |Design Engineering is requesting we go to 4 oz Cu for a new power module |design, 4 layer PWB. | |Any gotcha's with 4 oz Cu we need to be aware of and is this a fairly |standard job for |PWB houses?? | |Any comments, info or recommended PWB suppliers appreciated. | |Tks......DT | |############################################################## |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. |If you need assistance - contact Keach Sasamori at [log in to unmask] or |847-509-9700 ext.5315 |############################################################## ############################################################## 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. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################