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New Contributor

I consider thermal analysis for my circuit using S29AL016J70T (TSOP 48pin package) .

I would like to confirm thermal resistance value of junction to case for S29AL016J70T.

Regards

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Employee

Hello,

Thank you for contacting Cypress Semiconductor

Cypress no longer use Theta JC on plastic/epoxy bodied packages. Instead, Cypress use Theta JA (junction to ambient)

and Psi JT (junction to top of case) for plastic/epoxy bodied packages.  Since the 48-pin TSO is a plastic/epoxy package,

there are many resistance paths.  Therefore, no specific thermal model is used.

Theta j-a :  40 C/W

Psi j-t :  17 C/W

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

View solution in original post

2 Replies
Employee

Hello,

Thank you for contacting Cypress Semiconductor

Cypress no longer use Theta JC on plastic/epoxy bodied packages. Instead, Cypress use Theta JA (junction to ambient)

and Psi JT (junction to top of case) for plastic/epoxy bodied packages.  Since the 48-pin TSO is a plastic/epoxy package,

there are many resistance paths.  Therefore, no specific thermal model is used.

Theta j-a :  40 C/W

Psi j-t :  17 C/W

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

View solution in original post

New Contributor

Hello,

Thank you for your reply.

Your reply is very helpful for me.

Best regards,

MESH

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