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wiredInUSA - April 2014
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this low power consumption can translate
into significant system savings.
Preliminary TE tests reveal mid-board optics
at 5 watts per port and the CDFP active
optical cable assembly (AOC) at 6 watts
per port. The CDFP AOC is part of the
MSA that is currently underway. The MSA
provisions 8 watts per port – TE's CDFP AOC is
said to yield 25 percent power savings over
this specification. Coolbit optical engines
are suitable for both high density and high
bandwidth requirements.
Coolbit was developed at TE's fabrication
facility in Jarfalla, Sweden, using 25G VCSEL
and PIN devices, a TIA amplifier and a driver
IC.
Low smoke TPEs
A new series of low-smoke, flame-retardant
thermoplastic elastomers (TPEs) from Teknor
Apex Company is designed to provide
non-PVC insulation and jacketing without
halogenated flame retardants or phthalate
plasticizers, while avoiding the processing
limitations of highly filled halogen-free flame
retardant (HFFR) polyolefin compounds.
Halguard
®
E 59000 series HFFR compounds
contain no plasticizers but compare well
with plasticized PVC in mechanical and
electrical performance. Their polymer
chemistry differs from the polyolefins in other
HFFR compounds, and they incorporate
intumescent flame retardant formulations
rather than the metal hydrate fillers used
to render the polyolefin products flame
retardant.
While having flame performance similar to
that of polyolefinHFFRcompounds, together
with greater oil-resistance, Halguard E 59000
series TPEs exhibit lower density, lower melt
viscosity, and higher elongation at break,
and avoid the processing challenges of
high loadings of metal hydrate fillers.
Teknor Apex recommends the Halguard E
59000 series compounds for flexible cords.
The various grades in the Halguard series
are formulated to meet different needs;
for example: E 59001 meets deformation
and heat shock requirements at 150 ºC,
compared to121ºC for PVC, and is designed
for cords that meet UL 62 requirements and
for appliance wire that complies with UL
758; E 59002 provides even better flame
properties, but does not meet the UL 62 oil
test; E 59010 exhibits a high volume resistivity,
even in water, making it well suited for
insulation, but it does not meet IEC 61034
smoke test requirements on its own.
Silica sleeving