TPSM63603: Background of RoHS exempt

Part Number: TPSM63603
Other Parts Discussed in Thread: TLVM13630

Tool/software:

Dear Specialists,

My customer is considering TPSM63603 and has a question.

I would be grateful if you could advise.

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1) Products available for purchase as TPSM63603S are listed as exempt.
I assume that exempt products contain prohibited substances.
Could you please let me know in detail which substances are included? And why?
Power supply products often contain lead. Is this also the case for the TPSM63603?

2) The TPSM63603SRDHRG4 is listed as not available.
Are there any plans to make it available for purchase?

3) The TLVM13630 is a product similar to the TPSM63603 and is listed as exempt.
Can I assume that this product also contains lead?

4) The TLVM13630RDHRG4 is listed as not available.
Are there any plans to make it available for purchase?

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I appreciate your great help in advance.

Best regards,

Shinichi