IEC 60068-2-14:2023 PDF

Name: IEC 60068-2-14:2023 — Environmental testing - Part 2-14: Tests - Test N: Change of temperature
SKU: IEC 60068-2-14:2023
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Environmental testing - Part 2-14: Tests - Test N: Change of temperature

Название (английский):

IEC 60068-2-14:2023

Environmental testing - Part 2-14: Tests - Test N: Change of temperature

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 111
Дата публикации:: 27 июля 2023 г.
Издание:: IEC IS 60068 edition 7 version 1
ICS:: 19.040

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Описание (английский):

IEC 60068-2-14:2023 provides tests with specified ambient temperature changes to analyse their impacts on specimens. This seventh edition cancels and replaces the sixth edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating of the figures for clarification purposes; b) updating of specimen temperature(s) and severities as well as tolerances for change of temperature tests; c) revision of standardized requirements for test reports for Tests Na and Nb.

Abstract

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Стандарты, упомянутые в описании

Overview

IEC 60068-2-14:2023 - Environmental testing - Part 2-14: Tests - Test N: Change of temperature - is the seventh edition (2023) of the international standard that specifies methods to evaluate the effects of ambient temperature changes on specimens. This technical revision updates figures, specimen temperatures, severities and temperature tolerances, and revises standardized test-report requirements for Tests Na and Nb. The standard defines test procedures for rapid and controlled temperature changes to assess thermal robustness and reliability.

Key Topics and Requirements

Test types: Defines three change-of-temperature methods commonly referenced as Test Na (rapid change with prescribed transfer time), Test Nb (specified rate of change) and Test Nc (two-fluid-bath method).

Test parameters: Specifies how to select high and low conditioning temperatures, exposure times, rate of change (dT/dt), number of cycles, and transfer time (t) to represent field conditions.

Severities and tolerances: Provides updated severities and temperature tolerances, and includes Annex C with exemplary tolerance tables for preferred temperature and rate combinations.

Test equipment and setup: Describes thermal cabinet arrangements (one- or two-chamber methods), mounting/supporting of specimens, and precautions for condensation and thermal gradients.

Preconditioning and recovery: Specifies preconditioning, recovery intervals, and criteria for initial and final measurements.

Reporting requirements: Revised standardized requirements for test reports for Tests Na and Nb - detailing the information to be recorded and reported for reproducibility and compliance.

Informative guidance: Annex A (consequences of improper severities) and Annex B (thermal responsiveness of materials and geometries) aid test selection and interpretation.

Applications

IEC 60068-2-14 is used to evaluate how temperature transients and cycling affect:

Electronic assemblies, PCBs and components

Automotive and aerospace systems exposed to rapid temperature changes

Telecommunications and outdoor equipment subject to diurnal cycles

Industrial controls, consumer electronics and medical devices for reliability and lifetime prediction

Use this standard to perform temperature cycling, thermal shock, and environmental qualification tests that simulate real-world temperature changes and validate product robustness.

Related standards

IEC 60068 series (Environmental testing)

IEC 60068-2-1 (Cold test) and IEC 60068-2-2 (Dry heat test) - for effects due solely to low or high temperature exposures

Keywords: IEC 60068-2-14, change of temperature test, environmental testing, thermal cycling, Test Na, Test Nb, Test Nc, temperature tolerances, thermal shock, specimen.

IEC 60068-2-14:2023 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications

Who should use this standard

Related standards

Технические детали

IEC 60068-2-14:2009

Environmental testing - Part 2-14: Tests - Test N: Change of temperature

IEC 60068-2-82:2007/COR1:2009

Corrigendum 1 - Environmental testing - Part 2-82: Tests - Test XW1: Whisker test methods for electronic and…

BS EN IEC 60068-2-13:2021

Environmental testing - Tests. Test M: Low air pressure

IEC 60068-2-21:2006/COR1:2012

Corrigendum 1 - Environmental testing - Part 2-21: Tests - Test U: Robustness of terminations and integral mo…