New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 2/Section 20) which is identical with IEC 60068-2-20 : 2021 ‘Environmental testing - Part 2-20: Tests - Tests Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on recommendation of the Semiconductor Devices Components and Electronic Assembly Technology Sectional Committee and approval of the Electronics and Information Technology Division Council.

IS 9000 (Part 18/Sec 1 to 3) was published in 1981 and assistance were derived from IEC Pub 68-2- 20 : 1979 and IEC Pub 68-2-44 : 1979. Another Standard IS 9001 (Part 9) was published in 1981 and Similarly, while preparing the IS 9001 (Part 9) assistance were derived from IEC Pub 68-2-20 : 1979 and IEC Pub 68-2-44 : 1979. This superseding of standards is being published combine all the above mentioned standards and to align it with the latest version of IEC 60068-2-20 : 2021. On publication of this standards following Standards stand withdrawn:

a) IS 9000 (Part 18/Sec 1) : 1981;

b) IS 9000 (Part 18/Sec 2) : 1981;

c) IS 9000 (Part 18/Sec 3) : 1981; and

d) IS 9001 (Part 9) : 1981.