On Fri, May 29, 2009 at 8:20 PM, Xiaofan Chen wrote: > By the way, GDTs do not protect your device against direct lightening > strike. Rather it is for protection against the high transient voltage > differential generated by the lightening. Or called GPR (ground potential rises) in the Bourns white paper. > Even with the Lightening barriers, your device still needs the > normal surge protection (TVS, varistor, etc). > More about GDTs from Bourns. Last time my colleague sent the lightening barriers to Bourns for testing. http://www.bourns.com/ProductLine.aspx?name=gas_discharge_tubes http://www.bourns.com/data/global/pdfs/bourns_gdt_white_paper.pdf -- Xiaofan http://mcuee.blogspot.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist