International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 60539-1:2008
Title Directly heated negative temperature coefficient thermistors - Part 1: Generic specification
Project Number 21019
Abstract/Scope It is applicable to directly heated negative temperature coefficient thermistors, typically made from transition metal oxide materials with semiconducting properties. It establishes standard terms, inspection procedures and methods of test for use in sectional and detail specifications of electronic components for quality assessment or any other purpose. It constitutes a minor revision related to tables, figures and references.


Current Stage code 6060
Current Stage code date 2008-05-08
Current Stage code deadline 2008-12-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 40
Reference Document IEC 60539-1:2008 (EQV)
ICS 31.040.30 - Thermistors
Keywords Heated; Negative temperature; Thermistors
Note Due to the modification of the CLC/TC 40XB scope (D133/047), project transferred to CLC/SR 40
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2008-05-08 2008-12-01 export to doc file  EN  FR  DE
5099 2008-03-01 2008-05-01  
5060 2008-01-15 2008-01-28 export to doc file  EN
5020 2007-11-16 2008-01-11  
3090 2007-08-17 2007-09-30  
5060 2007-05-21 2007-06-04 export to doc file  EN
5020 2006-12-15 2007-05-18  
1090 2006-12-12 2006-12-15  

Implementation Dates

date of Ratification (DOR) (1) 2008-03-01
date of Availability (DAV) (2) 2008-05-08
date of Announcement (DOA) (3) 2008-06-01
date of Publication (DOP) (4) 2008-12-01
date of Withdrawal (DOW) (5) 2011-03-01


Supersedes EN 60539-1:2002
EN 143000:1991
Superseded by  
Normative reference (6) ISO 1000:1992
EN 60027-1:2006
IEC 60050-0:1979
EN 60062:2005
corr. January 2007
EN 60068-1:1994
EN 60068-2-1:2007
EN 60068-2-2:2007
EN 60068-2-6:1995
EN 60068-2-11:1999
EN 60068-2-14:1999
EN 60068-2-17:1994
HD 323.2.20 S3:1988
EN 60068-2-21:2006
EN 60068-2-27:1993
EN 60068-2-29:1993
EN 60068-2-32:1993
EN 60068-2-38:1999
EN 60068-2-45:1992
EN 60068-2-52:1996
EN 60068-2-54:2006
EN 60068-2-58:2004
corr. December 2004
EN 60068-2-69:2007
EN 60068-2-78:2001
IEC 60294:1969
IEC 60410:1973
IEC 60717:1981
EN 61249-2-7:2002
corr. September 2005
IEC QC 001002-3:2005
IEC 60617-DB

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.