Enabling electronics and next generation telecommunication systems
Flexibility is critical in today’s world. Specifically designed to ensure flexibility and product functionality, our POREX® electronics substrates exhibit excellent dielectric properties with a dielectric constant as low as 1.4.
Our POREX Virtek® PTFE films are microporous polytetrafluoroethylene materials that deliver:
- Low dielectric constant and high temperature resistance ideal for antenna systems, with the ability to withstand solder reflow at 260 °C
- Robust material thatdoes not collapse under pressure
- Surface structure allows printing or plating of metals.
- Consistent airflow performance even after being handled in the assembly process
Low Dielectric Material
Low energy absorption for high-frequency applications
Environmental Protection Vents
Protect your outdoor electronics with environmental protection vents
Low Dielectric Material
Lower energy absorption for high-frequency applications
High-frequency applications, such as antennae systems, require low energy absorption. Trusted by manufacturers around the world, our low dielectric materials:
- Ensure purity and manufacturability–POREX Virtek PTFE is pure PTFE and does not require a backing or support scrim like expanded PTFE. This allows for assembly via heat or vibrational welding.
- Deliver low dielectric constants–Offer constants as low as 1.4.
- Surface structure allows printing or plating of metals
- Improve device effectiveness–Material can be made into two and three-dimensions shapes from a variety of substrates, plus the ability to trap functional additives or catalysts within the pore structure.
| Example of POREX Porous PTFE Dielectric Properties | ||||||||||||
| Gap | Z0 | K | Tan 𝛿 | Qu | Qt | F,GHz | dB | Unc. Qt | Unc. F,kHz | Unc.dB | sd/fit | #pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 38.5 | 1.46 | 0.0012 | 231.8 | 231.1 | 0.81420 | 50.79 | 0.1452 | 0.5 | 0.002 | 0.00913 | 101s |
| 35 | 38.5 | 1.46 | 0.0008 | 393.9 | 392.8 | 2.44068 | 50.76 | 0.5300 | 1.9 | 0.003 | 0.02036 | 101s |
| 40 | 38.5 | 1.46 | 0.0007 | 443.6 | 442.2 | 3.25346 | 50.25 | 0.4400 | 1.6 | 0.002 | 0.01461 | 101s |
| 55 | 38.5 | 1.46 | 0.0006 | 582.3 | 580.6 | 5.69387 | 50.80 | 0.7073 | 2.6 | 0.003 | 0.01801 | 101s |
| 64 | 38.5 | 1.46 | 0.0006 | 651.4 | 649.5 | 8.13362 | 51.02 | 1.2086 | 5.1 | 0.005 | 0.02725 | 101s |
| 75 | 38.5 | 1.46 | 0.0004 | 770.1 | 767.9 | 10.57427 | 50.74 | 1.0921 | 4.2 | 0.003 | 0.02040 | 101s |
| 90 | 38.5 | 1.46 | 0.0005 | 793.1 | 790.6 | 13.8262 | 50.26 | 1.5756 | 7.7 | 0.005 | 0.02973 | 101s |
| Example based on PM 2010. Pore size: 15-25µ, porosity: 50-60% | ||||||||||||
Related Resources:
Datasheet: PTFE Fact Sheet
Environmental Protection Vents
Protect your outdoor electronics with environmental protection vents
POREX® IP Rated enclosure vents for outdoor electronics provide reliable pressure equalization and protection from rough outdoor conditions for applications such as heavy-duty machinery, transportation equipment, security systems and telecommunications systems.
Specifically designed for outdoor applications, our enclosure vents:
- Equalize pressure–Air-permeable structure reduces pressure build-up and allows heat to escape electronic enclosures, protecting enclosure seals from premature failure.
- Protect against contaminants–POREX Virtek materials repel dust, water, sweat, oils and other liquids from entering the enclosure.
- Assemble easily– Sintered structure allows material to be handled and welded without cumbersome assembly instructions.
POREX Virtek® PTFE Membrane — Typical Properties
| Item Number | IP Rating † | WEP* Typical mbar | Typical Airflow l/hr/cm² @70mbar | Filtration Efficiency** >99.99% | Thickness mm | Max Operating Temp °C | UL-94/746C | Salt Fog$ |
|---|---|---|---|---|---|---|---|---|
| PMV10 | 64,67 | 270 | 107 | 0.5 µ | 0.13 | 260°C | V-0/f2 | No pen. |
| PMV10L*** | 64,67 | 270 | 85 | 0.5 µ | 0.3 | 100°C | – | No pen. |
| PMV15 | 64,67 | 370 | 75 | 0.4 µ | 0.18 | 260°C | V-0/f2 | No pen. |
| ‡PMV15T | 64,67 | 370 | 75 | 0.4 µ | 0.18 | 260°C | – | No pen. |
| PMV20 | 64,65,68 | 520 | 25 | 0.1 µ | 0.25 | 260°C | V-0/f2 | No pen. |
| PMV25 | 65,67,68 | 765 | 17 | 0.2 µ | 0.1 | 260°C | V-0/f2 | No pen. |
| PMV27 | 65,66,67,68 | 1050 | 7 | 0.1 µ | 0.19 | 260°C | V-0/f2 | No pen. |
† IEC std. 60529; IP 68 is a user defined and results must be verified by the user
*WEP = Water Entry Pressure
** According to IEST RP-CC007.2 2009
$ASTM B117-11 test method
***Laminated polyolefin mesh backing
‡ Oleophobic, AATCC TM 118 – Grade 8 – other membranes can also be treated to meet Grade 8 upon request
Properties are typical and not meant for specifications. Selected options and adhesives may effect properties
RoHS, WEEE, REACH Compliant (PFOA Free)
PRODUCT OFFERING BY MATERIAL SERIES – POREX Virtek® ADHESIVE DISCS
Dimenions (OD x ID in mm)
| Material Series | 5 x 2 mm* | 7 x 3 mm | 10 x 6 mm | 12.7 x 7.1 mm | 20 x 13 mm |
|---|---|---|---|---|---|
| PMV10 | PMV10M | PMV10N | PMV10P | PMV10W | PMV10C |
| PMV10L | PMV10LM | PMV10LN | PMV10LP | PMV10LW | PMV10LC |
| PMV15 | PMV15M | PMV15N | PMV15P | PMV15W | PMV15C |
| PMV20 | PMV20M | PMV20N | PMV20P | PMV20W | PMV20C |
| PMV27 | PMV27M | PMV27N | PMV27P | PMV27W | PMV27C |
| PMA10 | PMA10W# |
Special order items highlighted for higher MOQ. All others are stocked items
3M 93020LE adhesive standard (120 °C continuous use temperature
# Oleophobic treated and high temperature adhesive (good to 150 °C)
M, N, P, W & C are size codes as listed in column heading.
Many other standard and custom sizes available. Contact Porex for more information
Adhesive Vent AvailableStandard Sizes
| Available Sizes | Available Sizes |
|---|---|
| OD x ID (mm) | Parts Across |
| 5 x 2 | 4 |
| 7 x 3* | 1 |
| 7.6 x 3.3 | 1 |
| 7.6 x 3.3 | 4 |
| 10 x 6* | 1 |
| 10 x 6 | 5 |
| 12.7 x 7.1* | 1 |
| 14 x 8 | 1 |
| 20 x 13* | 1 |
| 21 x 16 | 1 |
| 25.4 x 19 | 1 |
| 30 x 25 | 1 |
| 40 x 32 | 1 |
| 40/19.5 x 30/9.5** | 6 |
**Rectangular format
Longer lead times for non-stocked items
Custom sizes available upon request
POREX Virtek® PTFE Vent Plugs — Typical Properties
| Item Number | Diameter mm (in.) | Thickness mm (in.) | WEP* mbar | IP Rating† | Typical Vent Airflow l/hr @70mbar | Max Operating Temp °C | Filtration Efficiency (99.99%) | UL-94 Rating |
|---|---|---|---|---|---|---|---|---|
| PD103032 | 3.2 (1/8″) | 3 (1/8″) | 450 | 64,67,68 | 1 | 260°C | 0.5 µ | 5VA, f1 |
| PD103063 | 6.3 (1/4″) | 3 (1/8″) | 450 | 64,67,68 | 3.8 | 260°C | 0.5 µ | 5VA, f1 |
*WEP = Water Entry Pressure
† IEC std. 60529; IP 68 is a user defined and results must be verified; product has not been specifically tested – passing is based on results from similar products
Assembly methods include: press fit, over-molding, compression seal, adhesive bonding or flange welding.
Numerous custom and standard options available. Please contact your local Porex sales representative to determine what is available.
Properties are typical and not meant for specifications.
RoHS, WEEE, and REACH Compliant (PFOA Free)
Related Resources:
Datasheet: POREX Virtek IP Rated Protection Vents
Datasheet: PTFE Fact Sheet
Datasheet: Porex PTFE Ingress Protection Test Report
Demonstration video: Demo of Porex Virtek PTFE Common Joining Techniques
Demonstration video: Hydrophobicity and handling properties: POREX Virtek PTFE vs. expanded PTFE
Demonstration video: Durability comparison of POREX Virtek PTFE vs. expanded PTFE
Demonstration video: Dangers of not venting a sealed enclosure
Demonstration video: Keep electronics dry and protected with POREX Virtek PTFE vents