The thermal resistance from junction to case of PCA82C250T

[lvzp]

Dear engineer of NXP

I  want to estimate the thermal dissipation of PCA82C250T on my own design.  But there is no thermal resistance from junction to case(Top and Bottom)  in the datasheet except the Rth(j-a). I need the Rth(j-c) to complete the estimation.

Thank you 

[TomasVaverka]

Dear Lv,

The PCA82C250 is our first generation CAN transceiver, which is already superseded by a second and third generation. Power dissipation was less of an issue when the type was developed, in the mid 90’s. We do not have a detailed thermal model available, which would show junction to case thermal characteristic.

Best regards,

Tomas