CHO-JAC® Flat Cable EMI Shield0 pages

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• Cable shielding products • EMI/ESD shielding laminates
• Shielded vents and windows
• Commercial and military EMI testing
LEADER IN EMI SHIELDING INNOVATION, DESIGN, AND TEST TECHNOLOGY 73
CHO-JAC® Flat Cable EMI Shield
CHO-JAC® shielding is a high quality flat
cable jacket designed to attenuate RF
signals and bring digital electronic
devices into compliance with FCC and
TEMPEST radiated emissions limits as
well as European Union and MIL-STD
radiated emissions and susceptibility
limits. Two standard designs permit
specification of a foil/film combination
which meets your shielding requirements.
For moderate performance and lower cost,
CJ-021 aluminum/polyester is offered.
For greater shielding effectiveness,
select CJ-022, constructed of copper/
polyester. Alternate foils, films and colors
are available on a custom basis.
FEATURES
n Designed with a 360° foil shield with
bonded metal overlap. Provides the
maximum EMI shielding when properly
sealed and terminated.
n Sizes to fit cables with 10, 16, 20, 26,
34, 40, 50, 60 or 64 conductors.
n Meets flame retardancy requirements
of UL rating 94V-0.
n Wires simplify folding and provide
crack resistance.
n Very flexible, easing cable routing
during assembly. Light weight.
n Pressure-sensitive adhesive eliiminates
heat-sealing irons and zippers.
CJ-021 and CJ-022 deliver effective EMI
shielding performance at an attractive
cost. The jacket is designed with a 360°
aluminum or copper shield bonded to
a polyester layer which resists scuff,
wear and tear. Metal-to-metal contact
is established as the jacket wrap is
completed. Integral wires simplify folding
and termination.
Cable routing during assembly is
facilitated by the jacket's flexibility, and
its light weight eases strain relief requirements.
Low impedance termination is
accomplished by folding back the shield
at the ends, and mechanically attaching
the foil to a ground on the chassis. Both
ends of the cable should be at the same
ground potential.
SELECTION CHART
CHO-JAC Shielding Corrosion Relative Temperature Chemical Flame Abrasion/Tear Dielectric
Type Effectiveness Flexibility Resistance Weight Resistance Resistance Retardancy Resistance Strength
CJ 021 Good Excellent Fair Lightest Good Good Non Flam Good Good
Nonconductive
Pressure-Sensitive
Adhesive
0.001" (90.025mm)
Polyester
Wire* Folding Points
Cable Width
0.0014" (0.04mm)
Copper Foil or
0.002" (0.5mm)
Aluminum Foil
Exposed Foil Overlap
for 360° Shielding
*Wires are not recommended for termination above 50 MHz.