Inductor of MSD ;
MSD: Moisture Sensitive Devices
Floor Life : The allowable time period ,after remove from a moisture barrier bag and before the solder re-flow process or manual solder for a moisture sensitive derice to be exposed to a factory ambient not exceeding 30C and 60%RH,
Classification: According to the DOE of IPC/JEDEC J-STD-020A ,the moisture sensitive level of surface mounting components *(pLCC) is classified into eight grads ,with are :1 ,2,2a,3,4,5,5a,6class .
1class floor life for Unlimited ;2 class floor life for one year;2a class floor life for 4 weeks ; 3class floor life for 168hour;ect |