Cost-Effective Electrically Conductive Foam Gaskets for High Volume Grounding Applications
SOFT-SHIELD® 4840 is a very cost-effective, electrically conductive foam used for grounding of environmentally controlled applications. Consisting of silver-plated nylon fibers embedded into a low-density urethane foam, SOFT-SHIELD® 4840 is a low compression force gasket solution ideal for high volume applications such as consumer devices and industrial electronics. It is a more cost effective version of the market leading SOFTSHIELD® 4850, requiring lower compression forces yet providing slightly lower conductivity (higher through resistance). SOFT-SHIELD® 4840 is expected to be flammability rated to UL 94 V-0 with an operating temperature range of -40°C to 70°C. The optimized dispersion of conductive fibers within the foam matrix means that this material is electrically stable over many closure cycles while typically experiencing a low compression set.
PRODUCT FEATURES:
- Very cost effective
- Z-axis electrical conductivity
- Good through resistance (<150milliohms at 30% gasket deflection)
- Stable electrical performance (through resistance) after multiple closure cycles
- 60 dB typical shielding effectiveness
- from 20 MHz to 10 GHz
- Low closure force (<2 PSI)
- Low compression set (<15%)
- Available in bulk rolls, cut sheets or custom die cut shapes
- Non-nickel bearing material
- RoHS & REACH compliant
- UL 94 V-0 (Tested by Chomerics)
IDEAL APPLICATIONS:
- High volume consumer electronic devices
- Servers, desktop PCs, and laptops
- I/O panels, backplanes, connectors, access panels and rectangular/ square strip gasket seals
- Telecom infrastructure rack and enclosure components
| SOFT-SHIELD EMI Gasket Comparison | |||
|---|---|---|---|
  |
 3500 |
 4840 |
 4850 |
 |
Request Sample | Request Sample | Request Sample |
| Sheilding Effectiveness | >100 | 60 | 95 |
| Operating Temperature F (C) | -40 to 158 (-40 to 70) |
-40 to 158 (-40 to 70) |
-40 to 158 (-40 to 70) |
| Product Type | Fabric Over Foam | Conductive Foam | Conductive Foam |
| Flammability Rating | UL 94 V-0 | UL 94 V-0 | UL 94 V-0 |
| Halogen Free | Available | No | No |
| PRICE (Request Quote) |
$ | $ | $$ |
| Profiles | Rectangular & Complex | Custom Die Cut | Custom Die Cut |
(CLICK HERE TO DOWNLOAD 4840 SPEC SHEET)
Matrix specializes in customization to meet the exact specifications required by manufacturers. Our state-of-the-art equipment and expertise ensure precise detail, providing manufacturers with tailored solutions to enhance their product quality and performance.
Matrix Technology is the only authorized distributor of Parker Chomerics products in Canada. We have been working with Canadian engineers and technology companies for 45 years as Canada’s premier engineered materials partner, and have been converting products into customized solutions ever since.
