Output and transfer characteristics of 1D model of thermal transistor is presented.

Fourier region, keen point, pinch-off point and saturation region are coined.

First ever equation for thermal current mmlsi21" class="mathmlsrc">mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S1290072916300278&_mathId=si21.gif&_user=111111111&_pii=S1290072916300278&_rdoc=1&_issn=12900729&md5=4181ca87003e2746e67d376342a3e70e">mg class="imgLazyJSB inlineImage" height="40" width="128" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S1290072916300278-si21.gif">mathContainer hidden">mathCode"><math altimg="si21.gif" overflow="scroll"><mrow><msub><mi>Jmi><mi>Smi>msub><mo>=mo><msub><mi>Jmi><mrow><mi>Smi><mi>Smi>mrow>msub><msup><mrow><mrow><mo>[mo><mrow><mn>1mn><mo>&minus;mo><mfrac><mrow><msub><mi>Tmi><mrow><mi>Gmi><mi>Smi>mrow>msub>mrow><mrow><msub><mi>Tmi><mi>Pmi>msub>mrow>mfrac>mrow><mo>]mo>mrow>mrow><mn>2mn>msup>mrow>math> is numerically established.

We get thermal amplification of output heat current &asymp; 218.

Obtained value of thermal transconductance is 0.0164 &plusmn; 0.0007.