Overview
IEC TS 61340-5-6:2025 establishes recognized methodologies, techniques, and measurement instruments to assess and manage electrostatic discharge (ESD) risks in processes involving ESD sensitive items (ESDS). Issued by the International Electrotechnical Commission (IEC), this technical specification guides manufacturers, assemblers, service providers, packagers, and testers in characterizing their processes where electronic components or assemblies are handled, ensuring robust ESD risk assessment beyond standard control measures.
This document supersedes IEC PAS 61340-5-6:2022 and represents a comprehensive update, providing essential guidance for industries seeking to optimize ESD protection in dynamic operational environments.
Key Topics
- ESD Risk Assessment: Systematic evaluation of potential damage to ESDS from charged personnel, ungrounded conductors, charged items, charged insulators, and exposure to electrostatic fields. This methodology enables the identification of risky process steps that could lead to ESD events.
- Measurement Techniques: Procedures for selecting and using instruments such as current probes, field meters, voltmeters, resistance meters, and event detectors. Different parameters-including resistance, voltage, charge, and discharge current-are measured to determine vulnerability levels and compliance with safe handling thresholds.
- Process Assessment: Step-by-step framework for characterizing individual processes or full process flows where ESD-sensitive items are present. This includes defining process capability in relation to the withstand voltage or current of handled components.
- Instrument Calibration and Environmental Factors: Emphasis on using verified instruments and accounting for environmental influences like humidity and temperature, both of which can impact measurement accuracy and risk assessment outcomes.
- Personnel and Safety: Outlines necessary safety precautions for workers performing ESD risk assessments, citing relevant safety standards (IEC 61010-1, IEC 61010-2-030). The document requires trained personnel with specialized knowledge in electrostatic measurement and ESD physics.
Applications
IEC TS 61340-5-6:2025 is applicable to any process or facility involved in the manufacturing, assembly, inspection, testing, packaging, labeling, servicing, or transport of electrical or electronic parts, assemblies, and equipment that are susceptible to electrostatic discharge. Practical implementations include:
- Manufacturing Lines: Assessment of automated handling equipment (AHE), manual and automated steps for PCB assembly, and integration of new machines or materials into ESD-sensitive processes.
- Quality Assurance: Routine and event-driven audits to verify the ongoing effectiveness of ESD control measures, especially when introducing new products or making process changes.
- Testing Laboratories: Detailed measurement of contact resistance, electrostatic fields, charge accumulation, and ESD event occurrences for both components and assemblies.
- Supply Chain Operations: Evaluation of ESD protection measures during labeling, packaging, and transport activities where movement and handling can generate risk.
Adopting the process assessment techniques described in IEC TS 61340-5-6 helps organizations minimize ESD failures, safeguard product reliability, and enhance process yield for ESDS.
Related Standards
For comprehensive ESD risk management, IEC TS 61340-5-6 should be applied alongside other key standards, including:
- IEC 61340-5-1: General requirements for ESD protection in electronic device handling.
- IEC TS 61340-5-4: Guidance on ESD compliance verification procedures.
- IEC 61340-2-3: Methods of test for determining the resistance and resistivity of solid materials to avoid electrostatic charge accumulation.
- IEC 61010-1 / IEC 61010-2-030: Safety requirements for electrical measurement equipment.
Integrating these standards ensures a holistic, consistent approach to ESD mitigation across design, process execution, and verification stages, supporting global best practices in the electronics sector.
Keywords: IEC TS 61340-5-6, ESD risk assessment, electrostatic discharge, ESD sensitive items, electronic device protection, process assessment techniques, electronic assembly, IEC standards, manufacturing ESD safety, ESD measurement instruments, ESD process evaluation.