Inventories
Inventories consist primarily of the cost of semiconductors, including wafer fabrication, assembly, testing and packaging; components; and modules purchased from subcontractors. Inventories are valued at the lower of cost (determined using the weighted average cost method) or net realizable value (estimated market value less estimated cost of completion and the estimated costs necessary to make the sale).
The Company writes down the carrying value of its inventories for estimated amounts related to the lower of cost or net realizable value, obsolescence or unmarketable inventory equal to the difference between the cost of inventory and the estimated net realizable value. The estimated net realizable value of the inventory is based on historical usage and assumptions about future demand, future product purchase commitments, estimated manufacturing yield levels and market conditions on a product-by-product basis. When the circumstances that previously caused inventories to be written down below cost no longer exist or when there is clear evidence of an increase in net realizable value because of changed economic circumstances, the amount of the write-down is reversed (i.e. the reversal is limited to the amount of the original write-down) so that the new carrying amount is the lower of the cost and the revised net realizable value.
Inventories
As disclosed in Note 2.3 to the Consolidated Financial Statements, the Company writes down the carrying value of its inventory to the lower of cost or net realizable value. The estimated net realizable value of the inventory is based on historical usage and assumptions about future demand, future product purchase commitments, estimated manufacturing yield levels and market conditions on a product-by-product basis. Actual demand may differ from the forecast established by the Company, which may materially impact recorded inventory values and cost of revenue.