SN74LV138A: Junction-to-case (top) thermal resistance, Rtheta,JC(top)

Takeshi Sasaki

Part Number: SN74LV138A

Hi team,

Does TI have Rtheta,JC(top) of sn74lv138a? It will be used for estimating junction temperature with using Rtherta,JC(top) through testing.

Best regards,

Takeshi Sasaki

0 Gabriel Lake1 over 4 years ago

Hi Takeshi,

Yes it does, are you looking for Rtheta,jc(top) in a particular package of SN74LV138A?

regards,

Gabriel

0 Takeshi Sasaki over 4 years ago in reply to Gabriel Lake1

Hi Gabriel,

Thank you for your comments. Yes, I need Rtheta,jc(top) of SN74LV138APW, so TSSOP -PW package. Could you provide the value?

Best regards,

Takeshi Sasaki

0 Gabriel Lake1 over 4 years ago in reply to Takeshi Sasaki

Hi Takeshi,

I will request the thermal values for the PW package. It can take up to three weeks, typically faster.

regards,

Gabriel

0 Takeshi Sasaki over 4 years ago in reply to Gabriel Lake1

Hi Gabriel,

Thank you for your comments. I see. Could you update this thread once you'll get the thermal value? Thanks!

Best regards,

Takeshi Sasaki

0 ShreyasRao over 4 years ago in reply to Takeshi Sasaki

Thermal results for the SN74LV138APW package device below in oC/W

Result- Theta JA-High K (standard datasheet value):	110.6
Result-Theta JC, top (standard datasheet value):	41.1
Result-Theta JB (standard datasheet value):	56.9
Result- Psi JT (standard datasheet value):	3.9
Result- Psi JB (standard datasheet value):	56.3
Result-Theta JC, bottom (standard datasheet value):	n/a

0 Takeshi Sasaki over 4 years ago in reply to ShreyasRao

Hi Shreyas,

Thank you for sharing the data. Thanks!

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