GB/T 2423.52-2003Environmental testing for electric and electronic products - Part 2: Test methods - Test 77: Body strength and impact shock (English PDF)

Foreword

This Part is a part of GB/T 2423 "Environmental testing for electric and electronic

products - Part 2: Test methods". It identically adopts IEC 60068-2-77:1999

"Environmental testing - Part 2-77: Tests 77 - Body strength and impact shock" (English

version).

This Part is consistent with all paragraphs and figures of IEC 60068-2-77:1997. The

numbering of chapters is also as consistent as possible under the premise of conforming

to GB/T 20000.2-2001. According to Chinese habits, it is slightly adapted in terms of

the language of narration and expression. For ease of use, the following editorial

changes have been made to this Part:

a) changed "this International Standard" to "this Part";

b) used decimal point "." to replace comma "," that is used as a decimal point;

c) deleted the foreword of the international standard.

Annex A of this Part is informative.

This Part was proposed by Ministry of Information Industry.

This Part shall be under the jurisdiction of Subcommittee on Machinery of National

Technical Committee on Environmental Testing of Electrical and Electronic Products

of Standardization Administration of China.

The drafting organizations of this Part: The Fifth Electronic Research Institute of the

Ministry of Information Industry.

Main drafters of this Part: Yang Chuan, Zhang Zheng.

Environmental testing for electric and electronic products -

Part 2: Test methods - Test 77: Body strength and impact

shock

1 Scope

This part of GB/T 2423 provides test methods applicable to surface mounting devices

(SMDs) made of glass or sintered materials such as capacitors, resistors and inductors

incorporating ferrites. Two test methods exist: body strength and impact shock.

The object of both tests is to evaluate the mechanical stresses applied to SMDs during

and after mounting; these tests look at different mechanical stresses. The relevant

component specification shall specify which test method or methods are applicable.

2 Normative references

The following normative documents contain provisions which, through reference in this

text, constitute provisions of this part of GB/T 2423. For dated references, subsequent

amendments to, or revisions of, any of these publications do not apply. However, parties

to agreements based on this Part are encouraged to investigate the possibility of

applying the most recent editions of the normative documents indicated below. For

undated references, the latest edition of the normative document referred to applies.

IEC 60194:1999, Terms and definitions for printed circuits

3 Terms and definitions

For the purposes of this Part of GB/T 2423, the terms and definitions given in IEC

60194 apply.

4 Test methods