GB/T 2423.4-2008: Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12 h + 12 h cycle)

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Scope

This Part determines the suitability of components, equipment or other articles for use,
transportation and storage under conditions of high humidity, combined with cyclic
temperature changes and, in general, producing condensation on the surface of the
specimen. If the test is being used to verify the performance of a specimen whilst it is
being transported or stored in packaging, then the packaging will normally be fitted
when the test conditions are being applied.

Basic Data

Standard ID	GB/T 2423.4-2008 (GB/T2423.4-2008)
Description (Translated English)	Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K04
Classification of International Standard	19.040
Word Count Estimation	13,162
Date of Issue	2008-05-19
Date of Implementation	2009-01-01
Older Standard (superseded by this standard)	GB/T 2423.4-1993
Quoted Standard	GB/T 2421-1999; GB/T 2422-1995; GB/T 2423.34-2005; GB/T 2424.6-2006
Adopted Standard	IEC 60068-2-30-2005, IDT
Regulation (derived from)	Announcement of Newly Approved National Standards 2008 No. 8 (No. 121 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard applies to determine the component, equipment or other products in the high humidity combined with temperature cycling and usually produces condensation in the test sample surface under conditions of use, transport and storage of adaptability. If the test is used to test samples with packaging during transport and storage performance, should be tested together with packaging. For small, light weight of the sample used in this test, the sample surface condensation may be more difficult, users should consider the use of alternative tests, such as GB/T 2423. 34-2005.