Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 8 of 10
Device No:DRX-083-121 Prepared date:2005/8/1 Prepared by: Carryll Hsu
ITR8307/S18/TR8
Recommended Method of Storage
The following are general recommendations for moisture sensitive level (MSL) 4 storage and use:
z Shelf life in sealed bag: 12 months at < 40 °C and < 90% relative humidity (RH)
z After bag is opened, devices that will be subjected to reflow solder or other high temperature
process must
a) Mounted within 72 hours of factory conditions < 30 °C/60%RH, or
b) Stored at <20% RH
z Devices require bake, before mounting, if:
Humidity Indicator Card is > 20% when read at 23 ± 5 °C
z If baking is required, devices may be baked:
a) 192 hours at 40℃,and <5% RH(dry air/nitrogen) or
b) 96 hours at 60℃,and <5% RH for all device containers
c) 24 hours at 125 °C
z Soldering Condition
a) Pb-free solder temperature profile
b) Reflow soldering should not be done more than two times.
c) When soldering, do not put stress on the LEDs during heating.
d) After soldering, do not warp the circuit board.
z Repairing
Repair should not be done after the LEDs have been soldered. When repairing is
unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed
beforehand whether the characteristics of the LEDs will or will not be damaged by repairing.