Introduction

Two major standards dominate ESD control programs:

• IEC 61340-5-1

• ANSI/ESD S20.20

Understanding their differences helps manufacturers choose compliant ESD garments and systems.

Overview of Both Standards

Key Differences

1. Structure & Terminology

IEC standards use internationally harmonized terminology, while ANSI/ESD standards use US-based conventions.

2. Testing & Documentation

Both standards require:

• Verification testing

• Compliance documentation

However, testing methods and frequency may differ slightly.

3. Garment Requirements

Both standards emphasize:

• Static-dissipative fabrics

• Full coverage

• Performance durability

Neither allows ordinary workwear as a substitute.

Which Standard Should You Follow?

• Global manufacturers often adopt IEC 61340-5-1

• US-based companies may prefer ANSI/ESD S20.20

• Many facilities comply with both

Conclusion

Despite minor differences, both standards share the same goal: controlling ESD risks. High-quality ESD garments typically meet both standards when properly designed.

👉 Our ESD garments are designed to support both IEC and ANSI ESD programs.