IEC TR 63091:2017
Current
The latest, up-to-date edition.
Study for the derating curve of surface mount fixed resistors - Derating curves based on terminal part temperature
24-05-2017
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Study for the derating curve of surface mount fixed
resistors
Annex A (informative) - Background of the establishment
of the derating curve based on ambient temperature
Annex B (informative) - The temperature rise of SMD
resistors and the influence of the printed circuit
board
Annex C (informative) - The influence of the number of
resistors mounted on the test board
Annex D (informative) - Influence of the air flow in the
test chamber
Annex E (informative) - Validity of the new derating
curve
Annex F (informative) - The thermal resistance of SMD
resistors
Annex G (informative) - How to measure the surface
hotspot temperature
Annex H (informative) - How the resistor manufacturers
measure the thermal resistance of resistors
Annex I (informative) - Measurement method of the
terminal part temperature of the SMD resistors
Annex J (informative) - The variation of the heat
dissipation fraction caused by the difference
between the resistor and its mounting configuration
Annex K (informative) - Influence of airflow on SMD
resistors
Annex L (informative) - The influence of the spatial
resolution of the thermograph
Annex M (informative) - Future subjects
Bibliography
IEC TR 63091:2017(E) is a technical report and is applicable to SMB resistors with sizes equal or smaller than the RR6332M, including the typical rectangular and cylindrical SMD resistors mentioned in IEC 60115-8.
| DevelopmentNote |
Stability Date: 2022. (05/2017)
|
| DocumentType |
Technical Report
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| PD IEC/TR 63091:2017 | Identical |
| IS/IEC/TR 63091 : 2017 | Identical |
| IEC 60115-8:2009 | Fixed resistors for use in electronic equipment - Part 8: Sectional specification - Fixed surface mount resistors |
| IEC 60115-1:2008 | Fixed resistors for use in electronic equipment - Part 1: Generic specification |
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