Hello @aravind5313,
Welcome to the DigiKey community.
There are two important considerations to your questions:
-
pre assembly (manufacturability)
-
operation
Pre assembly
The storage and handling conditions are very different depending on which aspect we are considering. To better understand the preassembly conditions, please consider this document. One of the more important sections in that document states:
The integrity of a component’s solderable surfaces may be prolonged with proper storage. A typical storage specification may read like this:
- 50 to 90 degrees Fahrenheit or 10 to 32 degrees Celsius
- 25% to 50% relative humidity
- no direct exposure to sunlight or other ultraviolet light
- no exposure to corrosive elements in the air such as ozone or sulfur compounds
- no exposure to radioactivity
As a rule, these conditions will result in a shelf life of two years for “simple” components such as resistors. We must consult the manufacturer’s data to determine the specific recommendation for more complex parts.
also
Tech Tip : Unsoldered components past the manufacturer recommended 2-year mark do not immediately expire like rotten produce. Since the components represent a sizable investment, you should conduct solderability tests to verify the integrity of the component’s finish.
Post assembly
A component becomes considerably more robust once it is soldered into place. Within limits we no longer need to contend with the oxidation of the surfaces.
-
Avoid condensing (water) environments
-
Consider adding conformal coating or potting for extreme environment
-
Be sure to follow the “rule of 10” which tells us that the life of a component is cut in half for every 10 degrees rise in Celsius.
Please let us know if we can provide additional assistance.
Best wishes,
APDahlen