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LM2576: The warehouse cannot accept incoming materials without vacuuming

Part Number: LM2576

Tool/software:

LM2576SX - 5.0 / NOPB;  The label of the 3A switching power supply chip indicates that the storage requirement is humidity sensitivity level 3, but the actual delivery was not vacuumed and thus cannot be received.  Please explain why?



We have encountered a similar situation before, saying that inert gas was filled inside for protection.  Please help confirm the current situation.  Thank you!

Order Number: 5500238965