Temperature Classification

Surface area	T4 Classification
< 20mm 2	Surface temperature ≥ 275 °C
≥ 20mm 2 < 10cm 2	Surface temperature ≥ 200 °C
≥ 20mm 2	Power dissipation ≥ 1.3 W *

* Reduced to 1.2W with 60°C ambient or 1.0W with 80°C ambient