1
US Headquarters TEL +(1) 781-935-4850 FAX +(1) 781-933-4318 • www.chomerics.com
Europe TEL +(44) 1628 404000 FAX +(44) 1628 404090
Asia Pacific TEL +(852) 2 428 8008 FAX +(852) 2 423 8253
South America TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817
Chomerics’ CHO-FOIL tapes are
an economical EMI shielding solution
for a variety of commercial uses.
The tapes are available in copper,
aluminum, or tinned copper foil
backed with Chomerics’ highly
conductive pressure-sensitive
adhesive*. Typical properties are
shown in Table 1 on the next page,
and reliability data appears in Table
* Recognized Under the Component
Program of Underwriters Laboratories, Inc.
CHO-FAB tape is a corrosion
resistant nickel-plated cloth coated
with Chomerics’ highly conductive
pressure-sensitive
adhesive*.
CHO-FAB tape is extremely strong
and lightweight, and has excellent
conformability/wrapability to enhance
shielding performance and appearance.
Use of corrosion resistant nickelplated
cloth and Chomerics’ superior
metal-particle-filled conductive
adhesive technology produces a
tape used in a wide variety of EMI
shielding and grounding applications.
Typical properties are shown in Table
1 on the next page.
Ordering Procedure
Refer to Tables 2 and 3. All CHOFOIL
and CHO-FAB tapes are available
in standard 36 yard (32.9 m)
rolls or die-cut custom configurations.
Call Chomerics’ Applications
Engineering Department for assistance
with a custom configuration.
4 on page 148. CHO-FOIL copper
tape is available with a non-conductive
adhesive for applications requiring
surface conductivity only. An
embossed version of CHO-FOIL
copper tape is also available, for a
more attractive appearance up to 6
inches (152 mm) wide. Standard
length rolls and die-cut custom
shapes can be ordered.
¡ Provide a low impedance
connection between a braided
cable shield and the metal
connector backshell in molded
cables. An effective EMI shielded
assembly can be achieved
without soldering the tape to
the braid or backshell
¡ EMI radiation measurement
troubleshooting, using CHOFOIL
tape to shield ventilation
slots or seam gaps
¡ Provide electrical continuity in
seams of EMI shielded rooms
and electronic enclosures
¡ Supply electrical contact to
surfaces that can’t be soldered
to, such as conductive plastic
or aluminum
¡ EMI shield for cables by
wrapping the tape around
the cable. An overlap is
recommended
¡ ESD shielding
¡ Provide corrosion-resistant
ground contact points
¡ Fabric tape available where
weight and flexibility are
important, such as for
wrapping cables
CHO-FOIL EMI Shielding Tape
with Conductive Adhesive
(Copper, Aluminum or Tinned Copper)
CHO-FAB EMI Shielding
Fabric Tape with
Conductive Adhesive
Typical Applications for CHO-FOIL
and CHO-FAB EMI Shielding Tapes
LAMINATES & GROUNDING PRODUCTS
CHO-FOIL® & CHO-FABTM Shielding Tapes
Chofab is available in standard (CFT) and rip-stop (CRS) nylon fabric
forms. Both fabrics use nickel / silver plating to provide excellent
electrical and corrosion resistance properties.
