IEC 60384-8:2024

Overview

IEC 60384-8:2024 is the International Electrotechnical Commission sectional specification for fixed capacitors of ceramic dielectric, Class 1, intended for use in electronic equipment. The standard defines preferred ratings and characteristics, selects applicable quality assessment procedures and test methods from IEC 60384-1:2021, and gives general performance requirements for this capacitor type. It covers leaded and leadless fixed ceramic capacitors with defined temperature coefficients, and explicitly excludes surface-mount multilayer ceramic capacitors (see IEC 60384-21) and capacitors intended for EMI suppression (see IEC 60384-14).

This 2024 edition has been restructured to align with ISO/IEC Directives, Part 2, updates symbol terminology, adds new temperature coefficient/tolerance codes (including C0G, U2J), changes Annex B from informative to normative, and adds a new conformance test schedule (Clause C.5).

Key topics and technical requirements

• Preferred ratings and characteristics: nominal capacitance, rated and category voltages, rated temperature, temperature coefficient and tolerance codes.
• Test and measurement procedures: visual inspection, dimensional checks, capacitance, tangent of loss angle (tan δ), insulation resistance, voltage proof, temperature coefficient and cyclic drift measurements.
• Reliability and robustness tests: solderability, resistance to soldering heat, robustness of terminations, rapid temperature change, vibration, bump/shock, climatic sequence, damp heat, endurance.
• Quality assessment: procedures for primary manufacture, structurally similar components, certified test records, and qualification approval (including fixed sample size testing).
• Marking and documentation: requirements for component marking, packaging, and information to be specified in detail specifications.

Typical test topics listed in the standard include: capacitance limits over temperature, insulation resistance, voltage proof, soldering heat and solderability, mechanical shock/vibration, climatic and humidity endurance, and conformance inspection plans.

Applications and who uses it

• Component manufacturers use IEC 60384-8:2024 to define production, testing, and acceptance criteria for Class 1 ceramic capacitors.
• Design engineers rely on the standard for selecting capacitors with predictable temperature coefficient and low drift for timing, filter, oscillator, and precision analog circuits.
• Quality and test laboratories implement the specified test methods and conformance inspection schedules.
• Procurement and compliance teams reference the standard to ensure supplier parts meet required ratings and reliability for electronic equipment.

Related standards

• IEC 60384-1:2021 - General requirements, quality assessment procedures, tests and measuring methods
• IEC 60384-21 - Fixed surface-mount multilayer capacitors (Class 1)
• IEC 60384-14 - Capacitors for electromagnetic interference suppression

Keywords: IEC 60384-8:2024, fixed capacitors, ceramic dielectric Class 1, temperature coefficient, capacitance testing, quality assessment, capacitor standards.