We typically use nonfunctional lands to improve PTH reliability for our polyimide boards. This is based on NHB 5300 section 3K703 and IPC-D-275 section 5.3.2.5 On a current design, our board vendor is asking to remove them based on some recommendations he has heard in the industry. We are hesitant to do this based on the above quoted specification. What do you all think? -- Karl Sweitzer voice: 716.47.77546 Eastman Kodak Company pager: 716.25.33681 800 Lee Road fax: 716.47.77293 Rochester, NY 14650-3118 mailto:[log in to unmask] ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################