MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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8 Storage and production
8.1 S
torage
SLM320 is shipped in vacuum sealed bags. The storage of modules shall be subject to the following
conditions:
1. When the ambient temperature is lower than 40°C and the air humidity is less than 90%, the module
can be stored in a vacuum sealed bag for 12 months;
2. After the vacuum seal bag is opened, the module can directly carry out reflow welding or other
high-temperature processes if the following conditions are met:
The module stores air humidity less than 10%;
The environment temperature of module is lower than 30
℃
, the air humidity is less than 60%,
and the factory finishes the SMT within 72 hours.
3.
If the module is under the following conditions, it needs to be baked before SMT;
When the ambient temperature is 23
℃
(5
℃
fluctuation is allowed), humidity level greater than
10%;
When the vacuum seal bag is opened, the ambient temperature of the module is lower than
30°C and the air humidity is less than 60%. However, the factory fails to complete the SMT
within 168 hours;
When the vacuum seal bag is opened, the module stores air humidity greater than 10%.
4.
If the module needs to be baked, bake at 125
℃
(fluctuation of 5
℃
above and below) for 8 hours.
Note:
The module packaging cannot withstand such high temperature, please remove the module packaging
before the module baking.
8.2 Reflow Profile
Figure 25 Reflow temperature curve
