View Single Post
  #1   Report Post  
Posted to sci.electronics.repair
N_Cook N_Cook is offline
external usenet poster
 
Posts: 5,247
Default Metalisation creep?

Why would a SMPS high speed Unitrode rectifier stud diode 1N5812 , 20 amp,
fail sitting around in a normal human occupation heated environment for 10
years unused?
Currently reads a stable 6.2 ohms. Replaced with a new one but I intend
passing ever increasing current through the old one to see what happens.
Any other ideas concerning cause or analysis ?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/