We have an Electromechanical assembly (clock) that has a step motor on the board. This electromechanical assembly is assembled in a screw less plastic moulded casing. The plastic casing is neither air tight nor water proof. The board is with SMOBC+ HALS finish.
This electromechanical assembly is first inserted in a polythene bag (not sealed). Five such assemblies go in to one duplex board packing box. Later many such packing boxes (80) go in to one big bubble sheet bag. The bubble sheet bag is closed with tape and placed in a wooden box. The wooden box is nailed and closed.
We send this wooden box via ship that delivers to our customer after travelling for 55 days.
Do we need to place a silica gel packet inside the duplex board packing box?
Is there any gurantee that this silica gel will protect our assembly against moisture till it is used by the customer.
Is there any standard guidelines for the size of the silica gel packet to be used? any related websites?
Is silica gel packing a mandatory? (I have seen silica gel packets in cameras packing boxes).
regards V.RAMANAND KINI
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