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



Reference EN 60738-1:1999
Title Thermistors - Directly heated positive step-function temperature coefficient - Part 1: Generic specification
Project Number 12324
Abstract/Scope Prescribes terms and methods of test for positive step-function temperature coefficient thermistors, insulated and non-insulated types, typically made from ferro-electric semi-conductor materials. Establishes standard terms, inspection procedures and methods of test for use in detail specifications for Qualification Approval and for Quality Assessment Systems for electronic components.


Current Stage code 6060
Current Stage code date 1999-01-26
Current Stage code deadline 1999-10-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 40
Reference Document IEC 60738-1:1998 (EQV)
ICS 31.040.30 - Thermistors
Keywords Thermistor; Step-function; Positive; Coefficient; Directly heated
Note EN following parallel vote * Supersedes EN 144000:1993 * Superseded by EN 60738-1:2006
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1999-01-26 1999-10-01 export to doc file  EN
5099 1999-01-01 1999-02-01  
5062 1998-11-12 1999-01-01  
5020 1998-08-07 1998-10-15  
1090 1998-08-03 1998-12-03  

Implementation Dates

date of Ratification (DOR) (1) 1999-01-01
date of Availability (DAV) (2) 1999-01-26
date of Announcement (DOA) (3) 1999-04-01
date of Publication (DOP) (4) 1999-10-01
date of Withdrawal (DOW) (5) 2001-10-01


Supersedes EN 144000:1993
Superseded by EN 60738-1:2006
Normative reference (6) ISO 1000:1992
IEC 60050-0:1979
EN 60062:1993
EN 60068-1:1994
EN 60068-2-1:1993
EN 60068-2-2:1993
HD 323.2.3 S2:1987
EN 60068-2-6:1995
EN 60068-2-11:1999
EN 60068-2-13:1999
EN 60068-2-14:1999
HD 323.2.20 S3:1988
EN 60068-2-21:1997
EN 60068-2-27:1993
EN 60068-2-29:1993
EN 60068-2-30:1999
EN 60068-2-45:1992
EN 60249-2-4:1994
corr. March 1994
IEC 60294:1969
IEC 60410:1973
IEC 60617-1:1985
IEC QC 001002-3:1998
IEC QC 001003:1988

(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.