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TE Connectivity 2.5mm
Sealed Signal Double
Lock Connectors
TE Connectivity BATTU
Dual Wall Heat Shrink
Tubing
A high-quality unshielded twisted-pair cable is
suitable for Ethernet in most areas of the vehicle,
with shielded twisted-pair cables used only where
necessary. The designer's choices also will help
control costs and save space and weight.
Modular and scalable MATEnet connectors developed
by TE Connectivity for automotive Ethernet, for
example, can also be used in heavy-duty vehicles for
applications requiring mid- to large-size data volumes
and low latencies, such as onboard diagnostics (V2X
technologies), telematics, dashboard infotainment,
ADAS, and more. The connectors can transmit
data at 100Mbps to 1Gbps (per IEEE 100BASE-
T1/1000BASE-T1) and can be used with unshielded or
shielded twisted-pair cables.
On-chassis components require more than just
ruggedness. They must demonstrate mechanical
reliability, be serviceable, withstand extreme
temperatures and operate efficiently with longer
channel lengths. When dealing with higher
frequencies, cable/connector quality and design
can significantly impact channel performance,
which affects application performance. Especially
for on-chassis components, engineers need
to opt for cables and connectors specifically
designed for high-speed data transmission in harsh
environments.
"When trying to meet mechanical resilience needs,
some engineers may instinctively think to add
a larger, more robust housing, but thicker walls
may negatively impact electrical performance,"
says Mark Brubaker, Data Connectivity Product
Manager, TE Connectivity. "It's important to look
at what historically has worked, but also to take a
further step to understand this new generation of
electrical needs for transmitting high-speed data
and test how connections will perform given the
higher frequencies involved."
Conclusion
Product choice and placement cannot be an
afterthought when designing advanced and
automated functionality that requires high-speed
data transmission. When adding Ethernet to heavy-
duty vehicle architectures, designers must think
about and plan for the complexities involved much
earlier and deeper than before to successfully balance
reliability and mechanical resilience with electrical
requirements for high-speed data and longer channel
lengths, as well as serviceability needs. ■
