About TO-247-4 presenting black spots between case of end and ceramic pad

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WEN-YUNG
Level 3
Level 3
First like received 50 sign-ins 10 questions asked

Dear IFXer,

Do you have any experience to explain the following even? We found the black spots on the case of end and ceramic pad after the product high and low temperature cycle. 

WENYUNG_0-1705498997699.png

 

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Abhilash_P
Moderator
Moderator
Moderator
50 likes received 500 replies posted 250 solutions authored

Hi,

  Thank you for posting on the Infineon community. 

Can you please share the part number and the distributor from where this MOSFET was producred?

 

Regards,
Abhilash P

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