Multi-Layer Faraday Cage Protection for ICs, CPUs & Sensitive Components (Shielding > 20 dB | Semi-Transparent | Open-Top & Zip-Lock)
Our static shielding bags provide true Faraday cage protection for electrostatic-sensitive devices. Built with a multi-layer construction — an outer metalized polyester layer for electromagnetic shielding, a middle polyester layer for mechanical strength, and an inner anti-static polyethylene layer for direct component contact — these bags not only prevent static charge buildup but actively block external electrostatic discharge events from reaching the contents.
The semi-transparent silver appearance allows visual identification and barcode scanning without opening, reducing handling and potential ESD exposure. Available in open-top and resealable zip-lock formats across a wide range of standard sizes, from small IC packages to large PCB assemblies.
Multi-Layer Structure
|
Layer |
Material |
Function |
|
Outer Layer |
Metalized PET (Polyester) |
Electromagnetic shielding, static dissipation |
|
Middle Layer |
PET (Polyester) |
Mechanical strength, puncture resistance |
|
Inner Layer |
Anti-static LDPE |
Low-charging contact surface, heat-sealable |
Technical Specifications
|
Property |
Specification |
|
Material |
Multi-layer: Metalized PET / PET / Anti-static LDPE |
|
Shielding Effectiveness |
> 20 dB (per ANSI/ESD STM 11.31) |
|
Surface Resistivity (outer) |
< 10¹¹ Ω/sq (per ASTM D257) |
|
Surface Resistivity (inner) |
< 10¹¹ Ω/sq (per ASTM D257) |
|
Static Decay Time |
< 2.0 s (5,000V → 50V, per ANSI/ESD STM 11.11) |
|
Total Thickness |
0.075 mm (3 mil) typical |
|
Available Sizes |
75×125 mm to 600×900 mm (custom sizes available) |
|
Seal Type |
Open-top / Zip-lock resealable |
|
Color / Appearance |
Silver, semi-transparent |
|
Tensile Strength |
≥ 40 MPa (per ASTM D882) |
|
Puncture Resistance |
≥ 8 N (per ASTM D4833) |
|
Heat Seal Temperature |
150°C – 180°C |
|
Printing |
ESD warning symbol, company logo, custom text (optional) |
|
Humidity Dependence |
None — shielding is structural, not surface-dependent |
Key Features
· True Faraday cage protection — Metalized outer layer blocks external ESD events, not just surface charge
· Semi-transparent — Contents visible for identification and barcode scanning without opening
· Multi-layer construction — Combines shielding, strength, and anti-static properties in one bag
· Reusable zip-lock option — Resealable for repeated access in production and field service
· Wide size range — From 75×125mm (small ICs) to 600×900mm (server boards)
· High mechanical strength — PET layers provide superior tensile and puncture resistance
· Compliant — ANSI/ESD S541, IEC 61340-5-3, MIL-PRF-81705 Type I, ASTM D257
Static Shielding vs. Anti-Static — What's the Difference?
|
Feature |
Static Shielding Bag |
Anti-Static PE Bag |
|
External ESD protection |
Yes — blocks discharge events |
No — only prevents charge generation |
|
Mechanism |
Faraday cage (metalized layer) |
Surface anti-static additive |
|
Best for |
High-value components (ICs, CPUs, memory) |
General components (resistors, connectors) |
|
Visibility |
Semi-transparent (silver) |
Transparent (pink/blue tint) |
|
Cost |
Higher |
Lower |
|
Reusability |
Good (zip-lock option) |
Limited |
Applications
· IC chips, CPUs, GPUs, and memory modules
· PCB assemblies and motherboards
· Hard drives and solid-state drives
· Optical sensors and laser components
· Telecommunication modules and RF components
· Field service replacement parts
· Aerospace and military electronics packaging
Call to Action
Need shielding bags with custom printing or non-standard sizes? Send us your requirements — we'll provide samples within 3 business days.
