CHO-FABTM and CHO-FOIL®
Family of EMI Shielding Tapes with Conductiv e Adhesive
continued
*An embossed version of CHO-FOIL copper tape is available for a
more attractive surface appearance.
•Conductive elastomers •Knitted wire mesh
•Conductive coatings, sealants, adhesives
•Cable shielding products •EMI/ESD shielding laminates
•Shielded vents and windows
•FCC/VDE and TEMPEST testing
LEADER IN EMI SHIELDING INNOVATION, DESIGN, AND TEST TECHNOLOGY
TECHNICAL
BULLETIN
202
CHO-FABTM tape is a corrosion resistant
nickel-plated cloth coated with Chomerics’
highly conductive pressure-sensitive
adhesive. This adhesive contains a
uniform dispersion of conductive particles
that create a very low electrical resistance
through the tape. This feature results in
superior shielding performance in a wide
variety of environmental conditions.
CHO-FAB tape is extremely
strong, lightweight and has excellent
conformability/wrapability to enhance
shielding performance and appearance.
Use of corrosion resistant nickel-plated
cloth and Chomerics’ superior metal-
particle-filled conductive adhesive
technology produces a tape used in a
wide variety of EMI shielding and ground-
ing applications.
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. The copper
version of CHO-FOIL tape meets the
requirements of MIL-T-47012 and the
tinned copper foil tape meets MIL-T-10727
for corrosion resistance.
CHO-FOIL and CHO-FAB shielding
tapes are available in standard 36 yard
length rolls, and die cut custom configura-
tions.* For applications requiring surface
conductivity only, copper tape is available
with a non-conductive adhesive.
TYPICAL APPLICATIONS
• Provides 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 trouble-
shooting, using CHO-FOIL tape to
shield ventilation slots or seam gaps.
• Provides electrical continuity in seams
of EMI shielded rooms and electronic
enclosures.
• Supplies 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.
• Provides corrosion-resistant ground
contact points.
• Fabric tape available where weight
and flexibility are important such as
for wrapping cables.