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Outsourced Semiconductor Assembly and Test

Companies who perform IC packaging and testing - often referred to as OSAT
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Description

Outsourced Semiconductor Assembly and Test (manufacturing) provide third-party IC-packaging and test services.The OSATs are merchant vendors. IDMs and foundries with internal packaging operations also outsource a certain percentage of their IC-packaging production to the OSATs. The fabless companies also outsource their packaging to the OSATs and/or foundries.