IEC 60539-2:2019 PRV 
Pre release version

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

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Abstract

This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2019-04-26 to 2019-06-07. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.

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.

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Additional information

Publication typeInternational Standard
Publication date2019-04-26
Edition2.0
Available language(s)English/French
TC/SCTC 40 - Capacitors and resistors for electronic equipmentrss
ICS31.040.30 - Thermistors
Stability date  2027
Pages44
File size1498 KB

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