Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


SMT device shelf Life

#24964

SMT device shelf Life | 25 June, 2003

Does anyone have a listing of recommended usage requirements on SMT components.

Can you use SMT resistors which are over 3 years old for example ?

Can you use ICs which are not known to be moisture sensitive but which are over 5 years old.

reply »


RDR

#24967

SMT device shelf Life | 25 June, 2003

A lot of it depends upon what the lead terminations are and the storage conditions. For example if they are tin you will run into trouble. We have used all types of parts that are all ages (We just started doing BGAs that are 5 years old.) I don't know of any reliability or functionality issues with old parts just potential assembly issues. You may want to sample some of these for solderability prior to putting into production. Russ

reply »

PCB X-Ray Inspection

Reflow Ovens thermal process improvement