IEC 60539-2:2019 Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
2010IEC 60539-2:2003/AMD1:2010 AMENDEMENT 1 Thermistances à coefficient de température négatif à chauffage direct – Partie 2: Spécification intermédiaire – Thermistances à coefficient de température négatif pour montage en surface (Edition 1.0)
2010IEC 60539-2:2010 Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
2003IEC 60539-2:2003 Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification; Surface mount negative temperature coefficient thermistors