It is just the life of the surface finish on the solder contacts. Other than that, I'm unaware of any conventional resistor technology which has an aging contingent.
Wayne
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lyon Yuan
Sent: Tuesday, May 23, 2017 8:23 AM
To: [log in to unmask]
Subject: [TN] Resistor shelf life
Dear All,
May I know resistor shelf life in general?