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IEC 60539-2 Ed. 2.0 b:2019

Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
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IEC 60539-2 Ed. 2.0 b:2019

Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors

PUBLISH DATE 2026
PAGES 76
IEC 60539-2 Ed. 2.0 b:2019
Directly heated negative temperature coefficient thermistors - Part 2: Sectional specification - Surface mount negative temperature coefficient thermistors
IEC 60539-2:2019 is available as IEC 60539-2:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60539-2:2019 is applicable to surface mount directly heated negative temperature coefficient thermistors, typically made from transition metal oxide materials with semiconducting properties. These thermistors have metallized connecting pads or soldering strips and are intended to be mounted directly on to substrates for hybrid circuits or on to printed boards.
This edition includes the following significant technical changes with respect to the previous edition:
a) revision for the structure in accordance with ISO/IEC Directives, Part 2:2016 (seventh edition) to the extent practicable, and for harmonizing with IEC 60539-1:2016;
b) the upper category temperatures of 175 °C, 200 °C, 250 °C, 315 °C, 400 °C in Table 1 have been added;
c) the dimensions of 0402M in Annex A have been added.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60539
Publication Date April 1, 2026
Language b - English & French
Page Count 76
Revision Level 2.0
Supercedes
Committee 40
Publish Date Document Id Type View
April 1, 2026 Revision
Not Available Revision
Not Available Revision
April 1, 2026 IEC 60539-2 Ed. 2.0 b:2019 Revision
July 1, 2019 Revision