Level 1
Level 1

# S25FL128SAGBHI300 - Reliability - Thermal Resistance and TJ Max

What is the Rating of the TJ Max

Formula

Tj=TA+(Theta JA+PD)

Tj=85C+(36C/W+.62W)

Tj=121.62C?

1 Solution
Moderator
Moderator

# Re: S25FL128SAGBHI300 - Reliability - Thermal Resistance and TJ Max

Thank you for contacting Cypress.

You can calculate the maximum operating junction temperature for our devices using the below formula :

Tj = (Theta Ja * P) + Ta

Tj : Junction temperature

Theta Ja : Junction to ambient thermal resistance

P : Power consumption of the device (Operating Voltage * Operating Current)

Ta : Ambient temperature

Please note that the Theta Ja value for S25FL128SAGBHI300 is 38 °C/W.

You can refer to the following application note for more details : https://www.cypress.com/file/210756/download

Please let us know if you have any further queries.

Regards,

Apurva

2 Replies
Moderator
Moderator

# Re: S25FL128SAGBHI300 - Reliability - Thermal Resistance and TJ Max

Thank you for contacting Cypress.

You can calculate the maximum operating junction temperature for our devices using the below formula :

Tj = (Theta Ja * P) + Ta

Tj : Junction temperature

Theta Ja : Junction to ambient thermal resistance

P : Power consumption of the device (Operating Voltage * Operating Current)

Ta : Ambient temperature

Please note that the Theta Ja value for S25FL128SAGBHI300 is 38 °C/W.

You can refer to the following application note for more details : https://www.cypress.com/file/210756/download

Please let us know if you have any further queries.

Regards,

Apurva

Level 1
Level 1