SN75ALS172ADWR,SN751178NS,MAX3243ECP 　Thermal Data

Cafain,

Model data has been requested. Results expected by the end of the week.

Hello.

Provision of parameters possible?

Regards.

-----------------------------------------------------------------------  

The following texts should be disregarded.

It is the error of Editer. (TPA2006D1)

Cafain,

Sorry for the delay. Here are all values in C/W.

MAX3243ECPWR
Theta JA-High K 74.1
Theta JC, top 15.6
Theta JB 32.0
Psi JT 0.4
Psi JB 31.5

SN751178NSR
Theta JA-High K 57.9
Theta JC, top 19.3
Theta JB 18.7
Psi JT 1.5
Psi JB 18.4

SN75ALS172ADWR
Theta JA-High K 59.6
Theta JC, top 24.2
Theta JB 27.9
Psi JT 3.9
Psi JB 27.3

Quote,

arigato!

Hi

It is different with the value written to the data sheet, but the cause What?

Value written to the data sheet do you a Low-K?

MAX3243ECPWR

Datasheet(SLLS657D)                 Theta JA = 62C/W

Value that you have to answer    Theta ja High-k = 74.1C/W

SN751178NSR

Datasheet(SLLS059D)              Theta JA = 111C/W

Value that you have to answer    Theta ja High-k = 57.9C/W

Best regards

Cafain,

A smaller difference like 62C/W vs 74C/W can be the result of new modeling software taking more variables into consideration. A large difference like 111C/W vs. 58C/W will be a Low-K vs. High-K model.