<prompt> IUCD having the longest life span is-ProgestasertCu T 380AMirenaNova T  <response>: Ans. is b i.e., Cu T 380A The time periods for replacement for various IUDs are:- Copper T 200 : 3 years Copper T 380A : 10 years Multiload Cu 250 : 3 years Multiload 375 : 5 years LNG-IUSMirena : 5 years Progestasert: 1 year Nova T : 5 years 