KS C IEC 61253-1-2023 Piezoelectric ceramic resonators Specifications in the IEC Electronic Components Quality Assessment System (IECQ) Part 1: General Specification Qualification Certification
2023KS C IEC 61253-1-2023 Piezoelectric ceramic resonators Specifications in the IEC Electronic Components Quality Assessment System (IECQ) Part 1: General Specification Qualification Certification
2018KS C IEC 61253-1:2018 Piezoelectric ceramic resonators — A specification in the IEC quality assessment system for electronic components (IECQ) — Part 1: Generic specification - Qualification approval