MTTFv1rev 12025-09-26IEC 60050-192:2015, 192-05-11

mean operating time to failure

0112/2///62683#ACE061

expectation of the operating time to failure

Used by classes: 1

property

Also appears in2#

Entities with the same name in other dictionaries:

Code: ACE061
Data type: INTEGER_MEASURE_TYPEmeasure
Unit: UAB026 UAB026

Used by classes (1)

ACC080Reliability characteristics

All properties48#

Version: 1
Revision: 1
Preferred name: mean operating time to failure
Synonymous name
Short name: MTTF
Definition: expectation of the operating time to failure
Definition source: IEC 60050-192:2015, 192-05-11
Note: In the case of non-repairable items with an exponential distribution of operating times to failure (i.e. a constant failure rate) the MTTF is numerically equal to the reciprocal of the failure rate. This is also true for repairable items if after restoration they can be considered to be "as-good-as-new"Dans le cas des entités non réparables avec une distribution exponentielle des temps de fonctionnement avant défaillance (c’est-à-dire avec un taux de défaillance constant), la durée moyenne de fonctionnement avant défaillance est numériquement égale à l’inverse du taux de défaillance. Cela est également vrai pour les entités réparables si, après rétablissement, elles peuvent être considérées comme aussi bonnes que neuves.
Definition class: 0112/2///62683#ACC080Reliability characteristics
Unit structure: y
Drawing reference: NR1..7
Initial value: 0112/2///62720#UAB026 UAB026
Responsible committee: IEC/TC 121
Publisher: IEC
Published in: NON_DEPENDENT_P_DET
Status level: Standard
Version release date: 2025-09-25
Revision release date: 2025-09-26
Version initiation date: 2025-09-26
Original definition date: 2025-09-26
Change request ID: C00094
C017
C018
C019
MDC_P001_6: 0112/2///62683#ACE061mean operating time to failure
MDC_P022: INT_MEASURE_TYPE
MDC_P025_1: MTTF