I am looking for a good MTBF freeware or workbook that will help me estimate MTBF data for various electrical and mechanical components (resistors, capacitors, conductors, diodes, switches, etc.) Can't find data sheets on any of these so I need a way to estimate them through calculation.

Something like this is what I am looking for:
http://home.comcast.net/~pstlarry/MH217F1.htm

The links are dead so I can't use them but if anyone knows of something similar (or they downloaded these while they were still online) that would be much appreciated.

Thanks!