S = Silicon Sealed, HT = Max. Working temperature 225ˇăC (non-HT types 138ˇăC)
Number explantion: TEx1-yyyzz
x = Area of section of N/P (C = >1mm2, S = <1mm2)
yyy = No. of couples
zz = max. current (A)
For high temperature module (225ˇăC) add "HT", for sealed module add "S".