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IEC 60384-14 Ed. 5.1 en:2025 Fixed capacitors for use in electronic equipment - Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains, 2025
- Redline version [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions and classification [Go to Page]
- 3.1 Terms and definitions
- 3.2 Classifications [Go to Page]
- 3.2.1 Classification of X capacitors
- 3.2.2 Classification of Y capacitors
- 4 Preferred ratings and characteristics [Go to Page]
- 4.1 Preferred climatic categories
- 4.2 Preferred values of ratings [Go to Page]
- 4.2.1 Nominal capacitance (CN)
- 4.2.2 Tolerance on nominal capacitance
- 4.2.3 Selection of rated voltages (UR)
- 4.2.4 Nominal resistance (RN)
- 4.2.5 Rated temperature
- 4.2.6 Passive flammability
- 4.3 Requirements for sleeving, tape, tubing and wire insulation
- 5 Test and measurement procedures, and performance requirements [Go to Page]
- 5.1 General
- 5.2 Visual examination and check of dimensions [Go to Page]
- 5.2.1 General
- 5.2.2 Creepage distances and clearances
- 5.3 Electrical tests [Go to Page]
- 5.3.1 Voltage proof
- 5.3.2 Capacitance
- 5.3.3 Tangent of loss angle
- 5.3.4 Resistance (Equivalent Series Resistance (ESR)) (for RC units only)
- 5.3.5 Insulation resistance
- 5.4 Robustness of terminations
- 5.5 Resistance to soldering heat [Go to Page]
- 5.5.1 General
- 5.5.2 Test conditions
- 5.5.3 Final inspection, measurements, and requirements
- 5.6 Solderability [Go to Page]
- 5.6.1 General
- 5.6.2 Test conditions
- 5.6.3 Requirements
- 5.7 Rapid change of temperature [Go to Page]
- 5.7.1 General
- 5.7.2 Final inspection
- 5.8 Vibration [Go to Page]
- 5.8.1 General
- 5.8.2 Test conditions
- 5.8.3 Final inspection
- 5.9 Repetitive shock (bump) [Go to Page]
- 5.9.1 General
- 5.9.2 Test conditions
- 5.9.3 Final inspection, measurements, and requirements
- 5.10 Shock [Go to Page]
- 5.10.1 General
- 5.10.2 Test conditions
- 5.10.3 Final inspection, measurements, and requirements
- 5.11 Container sealing [Go to Page]
- 5.11.1 General
- 5.11.2 Test conditions
- 5.11.3 Requirements
- 5.12 Climatic sequence [Go to Page]
- 5.12.1 General
- 5.12.2 Initial measurements
- 5.12.3 Dry heat
- 5.12.4 Damp heat, cyclic, test Db, first cycle
- 5.12.5 Cold
- 5.12.6 Damp heat, cyclic, test Db, remaining cycles
- 5.12.7 Final inspection, measurements, and requirements
- 5.13 Damp heat, steady state (DHSS) [Go to Page]
- 5.13.1 General
- 5.13.2 Initial measurements
- 5.13.3 Test conditions
- 5.13.4 Final inspection, measurements, and requirements
- 5.13.5 Sample size summary for humidity tests
- 5.14 Impulse voltage [Go to Page]
- 5.14.1 General
- 5.14.2 Initial measurements
- 5.14.3 Test conditions
- 5.14.4 Requirements
- 5.15 Endurance [Go to Page]
- 5.15.1 General
- 5.15.2 Test conditions
- 5.15.3 Sampling
- 5.15.4 Initial measurements
- 5.15.5 Endurance for Class X capacitors and RC units containing Class X capacitors
- 5.15.6 Endurance for Class Y capacitors and RC units containing Class Y capacitors
- 5.15.7 Endurance for the lead-through arrangements
- 5.15.8 Test conditions – Combined voltage/current tests
- 5.15.9 Final inspection, measurements, and requirements
- 5.16 Charge and discharge [Go to Page]
- 5.16.1 General
- 5.16.2 Initial measurements
- 5.16.3 Test conditions
- 5.16.4 Final measurements and requirements
- 5.17 Radiofrequency characteristics
- 5.18 Passive flammability test [Go to Page]
- 5.18.1 Testing according to IEC 60384-1
- 5.18.2 Alternative passive flammability test
- 5.19 Active flammability test [Go to Page]
- 5.19.1 Test condition
- 5.19.2 Adjustment of Ui
- 5.19.3 Requirements
- 5.20 Component solvent resistance (if applicable)
- 5.21 Solvent resistance of the marking
- 6 Marking [Go to Page]
- 6.1 General
- 6.2 Information for marking
- 6.3 Marking of capacitors
- 6.4 Marking of packaging
- 6.5 Additional marking
- 7 Information to be given in a detail specification [Go to Page]
- 7.1 General
- 7.2 Outline drawing and dimensions
- 7.3 Mounting
- 7.4 Ratings and characteristics [Go to Page]
- 7.4.1 General
- 7.4.2 Nominal capacitance range
- 7.4.3 Nominal resistance range (if applicable)
- 7.4.4 Particular characteristics
- 8 Assessment procedures [Go to Page]
- 8.1 Primary stage of manufacture
- 8.2 Structurally similar components
- 8.3 Certified records of released lots
- 8.4 Approval testing [Go to Page]
- 8.4.1 Safety tests only qualification approval
- 8.4.2 Qualification approval based on safety and performance testing
- 8.4.3 Qualification approval based on the fixed sample size procedure
- 8.5 Quality conformance inspection [Go to Page]
- 8.5.1 General
- 8.5.2 Formation of inspection lots
- 8.5.3 Test schedule for safety tests only approval
- 8.5.4 Delayed delivery
- 8.5.5 Assessment level
- Annexes [Go to Page]
- Annex A (normative) Circuit for the impulse voltage test
- Annex B (normative) Circuit for the endurance test
- Annex C (normative) Circuit for the charge and discharge test
- Annex D (normative) Declaration of design (confidential to the manufacturer and the certification body)
- Annex E (informative) Pulse test circuits [Go to Page]
- E.1 General
- E.2 Test circuits
- E.3 Charging of the capacitor
- E.4 Discharging of the capacitor [Go to Page]
- E.4.1 Discharging in resistive circuit
- E.4.2 Discharging in inductive circuit
- Annex F (normative) Particular requirements for safety test of surface mount capacitors [Go to Page]
- F.1 General
- F.2 Test and measurement procedures
- Annex G (informative) Capacitance ageing of fixed capacitors of ceramic dielectric, Class 2 [Go to Page]
- G.1 Overview
- G.2 Law of capacitance ageing
- G.3 Capacitance measurements and capacitance tolerance
- G.4 Special preconditioning
- Annex H (normative) Use of safety approved AC rated capacitors in DC applications [Go to Page]
- H.1 Overview
- H.2 Background
- H.3 Additional requirement for use of X- and Y-capacitors in DC applications
- H.4 Creepage and clearance distances
- Annex I (normative) Humidity robustness grades for applications, where high stability under high humidity operating conditions is required [Go to Page]
- I.1 Overview
- I.2 Humidity robustness grades [Go to Page]
- I.2.1 General
- I.2.2 Grade (I) robustness under humidity
- I.2.3 Grade (II) robustness under high humidity
- I.2.4 Grade (III) high robustness under high humidity
- I.3 Test description
- I.4 Indication of humidity robustness grades
- Annex J (normative) Description of creepage/clearance distance measurement for cased and conformal coated capacitors [Go to Page]
- J.1 Measurement of creepage distances and clearance – general [Go to Page]
- J.1.1 General
- J.1.2 Capacitor styles
- J.1.3 Capacitor body and terminal insulation
- J.1.4 Measurement principle
- J.2 Measurement [Go to Page]
- J.2.1 Creepage distance between terminals
- J.2.2 Clearance between terminals
- J.2.3 Clearance in mounted stage
- J.2.4 Conductors between terminals
- J.3 Precautions in handling
- Annex K (normative) Safety and performance tests qualification approval [Go to Page]
- K.1 Overview
- K.2 Qualification approval
- K.3 Quality conformance inspection [Go to Page]
- K.3.1 General
- K.3.2 Groups A and B inspection
- K.3.3 Group C inspection
- K.3.4 Test schedule for qualification approval
- Annex X (informative) Cross-references to the previous edition of this document
- Bibliography
- Figures [Go to Page]
- Figure 1 – Two-terminal EMI suppression capacitor
- Figure 2 – RC unit
- Figure 3 – Lead-through capacitor (coaxial)
- Figure 4 – Lead-through capacitors
- Figure 5 – By-pass capacitors
- Figure 6 – Impulse wave form
- Figure 7 – Typical circuit for pulse loading of capacitors under AC voltage
- Figure 8 – Fundamental AC wave with randomly, not synchronized, superimposed high-voltage pulse
- Figure 9 – Increased voltage for tests below 2 seconds
- Figure A.1 – Impulse voltage test circuit
- Figure B.1 – Endurance test circuit
- Figure C.1 – Charge and discharge test circuit
- Figure E.1 – Resistive pulse test circuit
- Figure E.2 – Inductive pulse test circuit
- Figure E.3 – Charge waveform for both circuits
- Figure E.4 – Discharge waveform for resistive circuit
- Figure E.5 – Discharge waveform for inductive circuit
- Figure F.1 – Example of test substrate for safety test according to Table F.1
- Figure J.1 – Example of a cased capacitor
- Figure J.2 – Example of a conformal coated capacitor
- Figure J.3 – Cased and conformal coated types
- Figure J.4 – Description
- Figure J.5 – Creepage distance – cased style
- Figure J.6 – Creepage distance – conformal coated style
- Figure J.7 – Clearance between terminals
- Figure J.8 – Clearance in mounted stage – cased style
- Figure J.9 – Clearance – capacitor body larger than lead pitch
- Figure J.10 – Clearance – capacitor body smaller than lead pitch
- Tables [Go to Page]
- Table 1 – Classification of Class X capacitors
- Table 2 – Classification of Class Y capacitors
- Table 3 – Creepage distances and clearances
- Table 4 – Voltage proof
- Table 5 – Insulation resistance – Safety tests only
- Table 6 – Insulation resistance – Safety and performance tests
- Table 7 – Resistance to soldering heat – Requirements
- Table 8 – Shock test preferred severities
- Table 9 – Climatic sequence – Requirements
- Table 10 – Damp heat, steady state –Requirements for samples tested without voltage applied
- Table 11 – Damp heat, steady state – Requirements for samples tested with voltage applied
- Table 12 – Sample sizes for humidity tests
- Table 13 – Endurance – Requirements
- Table 14 – Charge and discharge – Requirements
- Table 15 – Sampling plan – Tests concerning safety requirements only
- Table 16 – Test schedule and sampling plan for lot-by-lot tests
- Table 17 – Test schedule for safety tests only
- Table 18 – Assessment level
- Table A.1 – Values of CX, CT, RP, RS, Cp
- Table A.2 – Values and tolerances of CX, tr, td
- Table F.1 – Test schedule and sampling plan for safety test of surface mount capacitors
- Table H.1 – Test conditions for the additional samples
- Table I.1 – Requirements
- Table K.1 – Sampling plan – Safety and performance tests qualification approval – Assessment level DZ
- Table K.2 – Test schedule and sampling plan for lot-by-lot tests
- Table K.3 – Test schedule for safety and performance tests qualification approval Assessment level DZ
- Table K.4 – Assessment level
- Table X.1 – Reference to IEC 60384-14 for clause/subclause or annex
- Table X.2 – Reference to IEC 60384-14 for figure/table
- Final version [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions and classification [Go to Page]
- 3.1 Terms and definitions
- 3.2 Classifications [Go to Page]
- 3.2.1 Classification of X capacitors
- 3.2.2 Classification of Y capacitors
- 4 Preferred ratings and characteristics [Go to Page]
- 4.1 Preferred climatic categories
- 4.2 Preferred values of ratings [Go to Page]
- 4.2.1 Nominal capacitance (CN)
- 4.2.2 Tolerance on nominal capacitance
- 4.2.3 Selection of rated voltages (UR)
- 4.2.4 Nominal resistance (RN)
- 4.2.5 Rated temperature
- 4.2.6 Passive flammability
- 4.3 Requirements for sleeving, tape, tubing and wire insulation
- 5 Test and measurement procedures, and performance requirements [Go to Page]
- 5.1 General
- 5.2 Visual examination and check of dimensions [Go to Page]
- 5.2.1 General
- 5.2.2 Creepage distances and clearances
- 5.3 Electrical tests [Go to Page]
- 5.3.1 Voltage proof
- 5.3.2 Capacitance
- 5.3.3 Tangent of loss angle
- 5.3.4 Resistance (Equivalent Series Resistance (ESR)) (for RC units only)
- 5.3.5 Insulation resistance
- 5.4 Robustness of terminations
- 5.5 Resistance to soldering heat [Go to Page]
- 5.5.1 General
- 5.5.2 Test conditions
- 5.5.3 Final inspection, measurements, and requirements
- 5.6 Solderability [Go to Page]
- 5.6.1 General
- 5.6.2 Test conditions
- 5.6.3 Requirements
- 5.7 Rapid change of temperature [Go to Page]
- 5.7.1 General
- 5.7.2 Final inspection
- 5.8 Vibration [Go to Page]
- 5.8.1 General
- 5.8.2 Test conditions
- 5.8.3 Final inspection
- 5.9 Repetitive shock (bump) [Go to Page]
- 5.9.1 General
- 5.9.2 Test conditions
- 5.9.3 Final inspection, measurements, and requirements
- 5.10 Shock [Go to Page]
- 5.10.1 General
- 5.10.2 Test conditions
- 5.10.3 Final inspection, measurements, and requirements
- 5.11 Container sealing [Go to Page]
- 5.11.1 General
- 5.11.2 Test conditions
- 5.11.3 Requirements
- 5.12 Climatic sequence [Go to Page]
- 5.12.1 General
- 5.12.2 Initial measurements
- 5.12.3 Dry heat
- 5.12.4 Damp heat, cyclic, test Db, first cycle
- 5.12.5 Cold
- 5.12.6 Damp heat, cyclic, test Db, remaining cycles
- 5.12.7 Final inspection, measurements, and requirements
- 5.13 Damp heat, steady state (DHSS) [Go to Page]
- 5.13.1 General
- 5.13.2 Initial measurements
- 5.13.3 Test conditions
- 5.13.4 Final inspection, measurements, and requirements
- 5.13.5 Sample size summary for humidity tests
- 5.14 Impulse voltage [Go to Page]
- 5.14.1 General
- 5.14.2 Initial measurements
- 5.14.3 Test conditions
- 5.14.4 Requirements
- 5.15 Endurance [Go to Page]
- 5.15.1 General
- 5.15.2 Test conditions
- 5.15.3 Sampling
- 5.15.4 Initial measurements
- 5.15.5 Endurance for Class X capacitors and RC units containing Class X capacitors
- 5.15.6 Endurance for Class Y capacitors and RC units containing Class Y capacitors
- 5.15.7 Endurance for the lead-through arrangements
- 5.15.8 Test conditions – Combined voltage/current tests
- 5.15.9 Final inspection, measurements, and requirements
- 5.16 Charge and discharge [Go to Page]
- 5.16.1 General
- 5.16.2 Initial measurements
- 5.16.3 Test conditions
- 5.16.4 Final measurements and requirements
- 5.17 Radiofrequency characteristics
- 5.18 Passive flammability test [Go to Page]
- 5.18.1 Testing according to IEC 60384-1
- 5.18.2 Alternative passive flammability test
- 5.19 Active flammability test [Go to Page]
- 5.19.1 Test condition
- 5.19.2 Adjustment of Ui
- 5.19.3 Requirements
- 5.20 Component solvent resistance (if applicable)
- 5.21 Solvent resistance of the marking
- 6 Marking [Go to Page]
- 6.1 General
- 6.2 Information for marking
- 6.3 Marking of capacitors
- 6.4 Marking of packaging
- 6.5 Additional marking
- 7 Information to be given in a detail specification [Go to Page]
- 7.1 General
- 7.2 Outline drawing and dimensions
- 7.3 Mounting
- 7.4 Ratings and characteristics [Go to Page]
- 7.4.1 General
- 7.4.2 Nominal capacitance range
- 7.4.3 Nominal resistance range (if applicable)
- 7.4.4 Particular characteristics
- 8 Assessment procedures [Go to Page]
- 8.1 Primary stage of manufacture
- 8.2 Structurally similar components
- 8.3 Certified records of released lots
- 8.4 Approval testing [Go to Page]
- 8.4.1 Safety tests only qualification approval
- 8.4.2 Qualification approval based on safety and performance testing
- 8.4.3 Qualification approval based on the fixed sample size procedure
- 8.5 Quality conformance inspection [Go to Page]
- 8.5.1 General
- 8.5.2 Formation of inspection lots
- 8.5.3 Test schedule for safety tests only approval
- 8.5.4 Delayed delivery
- 8.5.5 Assessment level
- Annexes [Go to Page]
- Annex A (normative) Circuit for the impulse voltage test
- Annex B (normative) Circuit for the endurance test
- Annex C (normative) Circuit for the charge and discharge test
- Annex D (normative) Declaration of design (confidential to the manufacturer and the certification body)
- Annex E (informative) Pulse test circuits [Go to Page]
- E.1 General
- E.2 Test circuits
- E.3 Charging of the capacitor
- E.4 Discharging of the capacitor [Go to Page]
- E.4.1 Discharging in resistive circuit
- E.4.2 Discharging in inductive circuit
- Annex F (normative) Particular requirements for safety test of surface mount capacitors [Go to Page]
- F.1 General
- F.2 Test and measurement procedures
- Annex G (informative) Capacitance ageing of fixed capacitors of ceramic dielectric, Class 2 [Go to Page]
- G.1 Overview
- G.2 Law of capacitance ageing
- G.3 Capacitance measurements and capacitance tolerance
- G.4 Special preconditioning
- Annex H (normative) Use of safety approved AC rated capacitors in DC applications [Go to Page]
- H.1 Overview
- H.2 Background
- H.3 Additional requirement for use of X- and Y-capacitors in DC applications
- H.4 Creepage and clearance distances
- Annex I (normative) Humidity robustness grades for applications, where high stability under high humidity operating conditions is required [Go to Page]
- I.1 Overview
- I.2 Humidity robustness grades [Go to Page]
- I.2.1 General
- I.2.2 Grade (I) robustness under humidity
- I.2.3 Grade (II) robustness under high humidity
- I.2.4 Grade (III) high robustness under high humidity
- I.3 Test description
- I.4 Indication of humidity robustness grades
- Annex J (normative) Description of creepage/clearance distance measurement for cased and conformal coated capacitors [Go to Page]
- J.1 Measurement of creepage distances and clearance – general [Go to Page]
- J.1.1 General
- J.1.2 Capacitor styles
- J.1.3 Capacitor body and terminal insulation
- J.1.4 Measurement principle
- J.2 Measurement [Go to Page]
- J.2.1 Creepage distance between terminals
- J.2.2 Clearance between terminals
- J.2.3 Clearance in mounted stage
- J.2.4 Conductors between terminals
- J.3 Precautions in handling
- Annex K (normative) Safety and performance tests qualification approval [Go to Page]
- K.1 Overview
- K.2 Qualification approval
- K.3 Quality conformance inspection [Go to Page]
- K.3.1 General
- K.3.2 Groups A and B inspection
- K.3.3 Group C inspection
- K.3.4 Test schedule for qualification approval
- Annex X (informative) Cross-references to the previous edition of this document
- Bibliography
- Figures [Go to Page]
- Figure 1 – Two-terminal EMI suppression capacitor
- Figure 2 – RC unit
- Figure 3 – Lead-through capacitor (coaxial)
- Figure 4 – Lead-through capacitors
- Figure 5 – By-pass capacitors
- Figure 6 – Impulse wave form
- Figure 7 – Typical circuit for pulse loading of capacitors under AC voltage
- Figure 8 – Fundamental AC wave with randomly, not synchronized, superimposed high-voltage pulse
- Figure 9 – Increased voltage for tests below 2 seconds
- Figure A.1 – Impulse voltage test circuit
- Figure B.1 – Endurance test circuit
- Figure C.1 – Charge and discharge test circuit
- Figure E.1 – Resistive pulse test circuit
- Figure E.2 – Inductive pulse test circuit
- Figure E.3 – Charge waveform for both circuits
- Figure E.4 – Discharge waveform for resistive circuit
- Figure E.5 – Discharge waveform for inductive circuit
- Figure F.1 – Example of test substrate for safety test according to Table F.1
- Figure J.1 – Example of a cased capacitor
- Figure J.2 – Example of a conformal coated capacitor
- Figure J.3 – Cased and conformal coated types
- Figure J.4 – Description
- Figure J.5 – Creepage distance – cased style
- Figure J.6 – Creepage distance – conformal coated style
- Figure J.7 – Clearance between terminals
- Figure J.8 – Clearance in mounted stage – cased style
- Figure J.9 – Clearance – capacitor body larger than lead pitch
- Figure J.10 – Clearance – capacitor body smaller than lead pitch
- Tables [Go to Page]
- Table 1 – Classification of Class X capacitors
- Table 2 – Classification of Class Y capacitors
- Table 3 – Creepage distances and clearances
- Table 4 – Voltage proof
- Table 5 – Insulation resistance – Safety tests only
- Table 6 – Insulation resistance – Safety and performance tests
- Table 7 – Resistance to soldering heat – Requirements
- Table 8 – Shock test preferred severities
- Table 9 – Climatic sequence – Requirements
- Table 10 – Damp heat, steady state –Requirements for samples tested without voltage applied
- Table 11 – Damp heat, steady state – Requirements for samples tested with voltage applied
- Table 12 – Sample sizes for humidity tests
- Table 13 – Endurance – Requirements
- Table 14 – Charge and discharge – Requirements
- Table 15 – Sampling plan – Tests concerning safety requirements only
- Table 16 – Test schedule and sampling plan for lot-by-lot tests
- Table 17 – Test schedule for safety tests only
- Table 18 – Assessment level
- Table A.1 – Values of CX, CT, RP, RS, Cp
- Table A.2 – Values and tolerances of CX, tr, td
- Table F.1 – Test schedule and sampling plan for safety testof surface mount capacitors
- Table H.1 – Test conditions for the additional samples
- Table I.1 – Requirements
- Table K.1 – Sampling plan – Safety and performance tests qualification approval – Assessment level DZ
- Table K.2 – Test schedule and sampling plan for lot-by-lot tests
- Table K.3 – Test schedule for safety and performance tests qualification approval Assessment level DZ
- Table K.4 – Assessment level
- Table X.1 – Reference to IEC 60384-14 for clause/subclause or annex
- Table X.2 – Reference to IEC 60384-14 for figure/table [Go to Page]