KS C IEC 60068-2-20:2021 Environmental testing — Part 2-20: Tests — Test T: Test methods for solderability and resistance to soldering heat of devices with leads
2022KS C IEC 60068-2-20:2022 Environmental testing — Part 2-20: Tests — Tests Ta and Tb: Test methods for solderability and resistance to soldering heat of devices with leads
2021KS C IEC 60068-2-20:2021 Environmental testing — Part 2-20: Tests — Test T: Test methods for solderability and resistance to soldering heat of devices with leads