Users Manual

GSM/GPRS Module Series
M66 Hardware Design
M66_Hardware_Design Confidential / Released 79 / 82
7 Storage and Manufacturing
7.1. Storage
MC66 module is stored in a vacuum-sealed bag. The storage restrictions are shown as below.
1. Shelf life in the vacuum-sealed bag: 12 months at <40ºC and <90%RH.
2. After the vacuum-sealed bag is opened, devices that need to be mounted directly must be:
 Mounted within 72 hours at the factory environment of ≤30ºC and <60% RH.
 Stored at <10% RH.
3. Devices require baking before mounting, if any circumstance below occurs.
 When the ambient temperature is 23ºC±5ºC and the humidity indication card shows the humidity
is >10% before opening the vacuum-sealed bag.
 Device mounting cannot be finished within 72 hours when the ambient temperature is <30ºC and the
humidity is <60%.
 Stored at >10% RH.
4. If baking is required, devices should be baked for 48 hours at 125ºC±5ºC.
As the plastic package cannot be subjected to high temperature, it should be removed from devices
before high temperature (125ºC) baking. If shorter baking time is desired, please refer to
IPC/JEDECJ-STD-033 for baking procedure.
NOTE