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MOSFET (Si/SiC) Forum Discussions

Rakesh_Infineon
Employee
Employee
10 sign-ins 5 sign-ins First reply posted

We are using the Infineon Dual N-MOSFET in our Laptop design. For our Main board thermal calculation, We need the below mentioned Thermal resistance details

S.No

Description

MFG Name

MFG Part Number

RθJB

1

Transistor, Dual N-MOSFET, 30V, (17,31)A, Vgs=20V, 1W, PG-TISON-8

INFINEON TECHNOLOGIES

BSC0921NDIATMA1

 

 

Kindly provide the requested details as soon as possible.

 

If you are not able to provide the RθJB value, Then Please confirm how the heat is going to dissipate for these components, towards the board side or towards the case side?

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1 Solution
vigneshkumar
Moderator
Moderator
Moderator
25 solutions authored 10 likes received 50 replies posted

Hi Rakesh,

Thanks for posted on infineon community.

Thermal resistance for Junction to case and ambient is given in DataSheet.

RthJC is thermal resistance of Junction to bottom case which will be on the board side.

Meghana_0-1671794592027.png

 

If you are referring to thermal resistance from junction to board by  RθJB, then it is same as Rthjc.

Regards

Vignesh kumar

View solution in original post

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vigneshkumar
Moderator
Moderator
Moderator
25 solutions authored 10 likes received 50 replies posted

Hi Rakesh,

Thanks for posted on infineon community.

Thermal resistance for Junction to case and ambient is given in DataSheet.

RthJC is thermal resistance of Junction to bottom case which will be on the board side.

Meghana_0-1671794592027.png

 

If you are referring to thermal resistance from junction to board by  RθJB, then it is same as Rthjc.

Regards

Vignesh kumar

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