When you think of extremely flexible wire, silicone insulated
wire comes to mind because of its
flexible properties. But what about using silicone in ribbon cable?
Manufactures turn to silicone ribbon cables when applications require flat
cables with specialized requirements or extreme flexibility. Flat cables and
ribbon cables are often used when space is a factor ribbon cables can also be easily
mass terminated using
an insulation displacement
connector (IDC). Ribbon cables are manufactured in a variety of
materials and configurations including silicone; the most common and least
expensive insulation is PVC.
Space is a luxury as devices become
smaller. Manufacturers are using flat and ribbon cables for more applications.
- Aerospace
- Automation/Robotics
- Medical
- Industrial
- Automotive
- Telecommunication
These types of applications often
need insulation materials other than PVC due to special requirements such as
extreme temperature, low smoke, flammability, flexibility, sterilization and
chemical contact. Silicone is an excellent choice for these types of
requirements. Not only is silicone
wire extremely flexible, it can withstand millions of flex cycles, and has
good steam and chemical resistance. Silicone ribbon cables can be extruded or
bonded depending on the type of termination that is used. Extruded ribbon
cables have a tighter center to center tolerance than the bonded ribbon cable.
When using a bonded ribbon cable, terminating with IDC is recommended. Extruded
ribbon cables normally require tooling to control shape and pitch which may add
to initial cost. Bonded ribbon cables normally do not have special tooling
used.
Flat
cables can be manufactured in a variety of constructions which may include zip
cords, ribbon cables and flat cables with an outer jacket. Custom cables can
also be constructed with shielded twisted pairs, overall shield, and with
tubing or lumens. Custom flat cables are also available in smaller gauges which
you cannot find "off the shelf".
Silicone insulated wire and cables
do have their drawback. Silicone has poor abrasion resistance, which can be a
critical problem for applications where the cable comes in contact with sharp
objects. Higher abrasion resistant formulas are available for silicone.
Consult your wire and cable manufacturer regarding your application to find out
the options available to you.
No comments:
Post a Comment