IEC 60384-20:2023

Overview

IEC 60384-20:2023 is an international standard developed by the International Electrotechnical Commission (IEC) that defines requirements for fixed metallized polyphenylene sulfide (PPS) film dielectric surface mount DC capacitors. These capacitors are designed specifically for use in electronic equipment and are mounted directly onto printed circuit boards (PCBs) or hybrid circuit substrates. The standard covers capacitors with DC ratings, metallized electrodes, and connecting pads or soldering strips suitable for surface mounting.

This part of IEC 60384 ensures consistent performance, quality, and reliability of PPS film capacitors by specifying preferred ratings, key characteristics, quality assessment procedures, testing methods, and performance requirements. Capacitors for electromagnetic interference suppression are excluded, as these are addressed in IEC 60384-14.

Key Topics

• Capacitor Structure and Use:

  • Surface mount PPS film capacitors with metallized electrodes
  • Direct mounting to PCBs or substrate-based hybrid circuits
  • Designed for DC operation; not intended for significant AC voltage components

• Performance Grades:

  • Grade 1 (Long-life): For applications with high reliability and stringent electrical requirements
  • Grade 2 (General purpose): For standard applications
  • Grade 3 (Miniature Type): For low-voltage (under 63V), compact applications

• Preferred Ratings and Characteristics:

  • Nominal capacitance values and tolerances according to international numbering systems
  • Rated voltages aligned with ISO and IEC standards
  • Operating temperature ranges from −55°C to +155°C
  • Classification into climatic categories for environmental robustness

• Testing and Quality Procedures:

  • Detailed procedures for electrical tests, mounting, solderability, shear tests, endurance, and solvent resistance
  • Test conditions and inspections for voltage proof, capacitance, loss angle, and insulation resistance
  • Quality assessment at both lot-by-lot and periodic inspection frequencies

• Self-Healing Properties:

  • Some PPS film capacitors can exhibit self-healing, depending on design and application.
  • This enhances the safety and longevity of capacitors in demanding electronic environments.

Applications

IEC 60384-20:2023 covers fixed surface mount PPS film capacitors essential for reliable operation in a variety of electronic equipment, such as:

• Consumer electronics (e.g., televisions, audio equipment, computing devices)
• Industrial control and measurement systems
• Automotive electronics (excluding EMI suppression)
• Telecommunications and networking devices
• Hybrid circuits requiring miniature or long-life surface mount capacitors

Key advantages of using PPS film capacitors compliant with this standard include stability at high temperatures, superior endurance, precise capacitance tolerances, and reliable quality control ensured by international assessment procedures.

Related Standards

• IEC 60384-1:2021 – Generic specification for fixed capacitors for use in electronic equipment; provides referenced test and assessment methods.
• IEC 60062 – Marking codes for resistors and capacitors; used for identification and traceability.
• IEC 60063 – Preferred number series for resistors and capacitors; standardizes capacitance and voltage values.
• IEC 60068-1 – General rules for environmental testing; climatic categories and test conditions.
• IEC 60384-14 – Specific requirements for capacitors used in electromagnetic interference suppression.
• IEC 61193-2 – Procedures for quality assessment, including sampling plans.

Keywords

IEC 60384-20:2023, fixed capacitors, PPS film capacitors, surface mount DC capacitors, electronic equipment capacitors, quality assessment, IEC standards for capacitors, capacitor performance grades, reliability, testing procedures, preferred ratings, international capacitor standards