John, Why not use Loctite on the hardware, or use locknuts? Also, experiment with different torques on the hardware with a shake table. Michael Hiteshew Lockheed Martin Launching Systems [log in to unmask] (410) 682-1259 > Subject: [TN] CEM 1 vs G10 > > I am looking for a comparison of (3) board types. > Advantages/Disadvantages. > suitable applications, etc. The (3) types are paper phenolic, CEM 1 and > G10. We are presently purchasing a product that uses a paper phenolic > board. The board has large components such as transformers and heat > sinks. > We are finding that the reliability is poor when the assembled product is > transported due to components vibrating loose. We are reasonably sure > that > G10 boards will help the problem. We are not sure of the CEM 1 board > characteristics. If someone could help with a comparison of the three it > would be greatly appreciated. The operating temperature range requirement > is 0 to 60 degrees C. > > Thanks, > John Curtis > Diebold Inc. > North Canton, Ohio > > > ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################