Rugged Fakra connectors rely on DuPont Zytel nylon for strength, toughness, and dielectric performance.

Rugged Fakra connectors rely on DuPont Zytel nylon for strength, toughness, and dielectric performance.


The connectors from the Electronic Components & Materials div. of Osram Sylvania, York, Pa. (sylvania.com), work with antennas for automotive radios, cell phones, and telematic systems such as keyless remote entry, global positioning, and tire-pressure monitoring.

The connector body is a 43% glass-reinforced nylon 6/6 called Zytel 70G43L from DuPont Engineering Polymers, Wilmington Del. (plastics.dupont.com). The nylon gives the connectors strength, stiffness, and toughness. It molds to precision tolerances of ±0.0005 in. (±0.013 mm) and is considered to have good mold-release properties.

A key component of the NuChannel connector is an internal insulator for its signal conductor. It is molded from Zytel 408, an unreinforced nylon 6/6 grade. The material's low dielectric constant at high frequency is crucial to minimize signal loss. It's also report-edly easier to mold and less costly than competitive fluoropolymers.

MATERIAL PROPERTIES

Property

Dry as molded

50%RH

Stress at break, kpsi
31.9
22.5
Tensile strength
40°F, kpsi
36.5
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73°F, kpsi
30
21
170°F, kpsi
17.5
10.5
Strain at break, %
3
4
Elongation at break,
2
3
Izod impact, ft-lb/in.
2.5
3.5
Heat-deflection temperature (66 psi),
°F 500
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