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ESD Materials Selection Guide for Electronics Manufacturing

ESD Control Standards

Key Standards

Standard	Scope	Resistance Range
ANSI/ESD S20.20	ESD control program	10^6–10^9 Ω (groundable)
IEC 61340-5-1	ESD protection program	10^6–10^9 Ω (groundable)
ANSI/ESD STM11.11	Surface resistance test	—
ANSI/ESD STM11.12	Volume resistance test	—
IEC 61340-2-3	Charge decay test	< 2 seconds

EPA Zone Requirements

Zone Type	Surface Resistance (Ω/sq)	Material Category
Work surfaces	10^6–10^9	Static dissipative
Floor	10^6–10^9	Static dissipative
Shelving/storage	10^6–10^9	Static dissipative
Wafer handlers	10^6–10^9	Static dissipative
Packaging	10^4–10^6	Conductive to dissipative
Grounding paths	< 10^6	Conductive

ESD Material Selection by Application

1. Workstation Surfaces & Benches

Recommended: ESD POM or ESD Laminate

· ESD POM provides machined work surfaces, tool holders, and jig plates

· Surface resistance: 10^6–10^9 Ω/sq

· Chemical resistant (cleaning solvents)

· Durable — withstands 5+ years of daily use

· Cost: moderate

2. PCB Assembly & SMT Line Components

Recommended: ESD POM

· Pick-and-place nozzle holders

· Conveyor guide rails

· Stencil cleaning frames

· Reflow oven chain guides

· ESD-safe component trays

· Cost-effective for large volume fixtures

3. Test & Inspection Equipment

Recommended: ESD PEEK or ESD PEI

· Test socket bodies (PEEK for high-temp, PEI for standard)

· Probe card insulators

· Burn-in board spacers

· Handler interface plates

· Higher cost justified by precision and durability

4. Wafer & Device Handling

Recommended: ESD POM (general), PEEK (process areas)

· Wafer carriers: ESD POM (transport), PEEK (process)

· IC trays: ESD POM (cost-effective)

· Device shipping tubes: ESD PVC or ESD PS

· FOUP internal components: PEEK/PPS

5. Cleanroom Infrastructure

Recommended: ESD POM panels and components

· Workstation tops

· Storage shelving

· Cart components

· Chair armrests

· Door handle covers

Cost-Performance Matrix

Material	Cost Index	Temp Limit	Best Application
ESD POM	1.0	90°C	80% of EPA applications
ESD PEI	3.0	170°C	Test equipment, fire-rated
ESD PEEK	10.0	250°C	Process areas, CMP
ESD PTFE (carbon)	2.0	260°C	Chemical exposure
ESD PVC (conductive)	0.5	60°C	Packaging, low-cost

Implementation Checklist

When implementing ESD materials in your EPA:

· [ ] Map all EPA zones and their resistance requirements

· [ ] Select materials per ANSI/ESD S20.20 or IEC 61340-5-1

· [ ] Verify surface resistance on all incoming materials (10^6–10^9 Ω/sq)

· [ ] Ground all dissipative surfaces to common point ground

· [ ] Test resistance periodically (every 6 months minimum)

· [ ] Replace materials when resistance drifts beyond spec

· [ ] Document material certifications and test records

· [ ] Train operators on ESD material handling

For ESD material comparison, see our ESD Plastic Materials guide. For ESD POM details, read ESD POM vs Standard POM.

FAQ

Q1: What surface resistance is required for EPA work surfaces?

Per ANSI/ESD S20.20 and IEC 61340-5-1, EPA work surfaces must have a surface resistance between 10^6 and 10^9 ohms per square. This static-dissipative range provides controlled charge dissipation while preventing sparks that could damage sensitive electronics.

Q2: Which ESD material is best for PCB assembly lines?

ESD POM is the most cost-effective and widely used ESD material for PCB assembly line components. It provides adequate surface resistance (10^6–10^9 ohms/sq), good wear resistance, and easy machinability for conveyor rails, fixture plates, and component trays.

Q3: How often should ESD materials be tested?

ESD materials should be surface-resistance tested at least every 6 months, and more frequently for high-wear components. Materials that drift beyond the 10^6–10^9 ohm/sq range should be replaced. ANSI/ESD S20.20 requires a compliance verification plan with defined test intervals.

Q4: Can standard plastics be made ESD-safe with coatings?

Yes, surface coatings (anti-static sprays, topical treatments) can temporarily make standard plastics ESD-safe. However, these wear off with use, cleaning, and handling. For permanent ESD protection, use inherently dissipative materials like ESD POM or ESD PEEK with carbon-based additives.

Need ESD materials for your electronics manufacturing? Contact NAGOMER for EPA-compliant materials, or explore our ESD products and POM sheets.

NAGOMER — Professional Engineering Plastics Solutions

www.nagomer.com | info@nagomer.com