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The junction temperature depends on a lot of variables, such as supply voltage applied, output load, etc etc. Tj = Ta + theta_ja x Pd This article explains how to estimate junction temperature. http://www.analog.com/static/imported-files/tech_articles/MS-2251.pdf. Take a look at page 4. Thermal resistance, theta_ja for an 8 lead SOIC is 120C/W. Looking at the excel spreadsheet that you attached, I think you might be asking for the abs max rating for junction temperature. For a majority of our amps/references, they are -65C to 150C.