How to choose the most cost-effective specification when purchasing Fakra cables?

How to choose the most cost-effective specification when purchasing Fakra cables?

When purchasing Fakra cables, choosing the most cost-effective specification can be considered from the following aspects:

Clear usage requirements

Transmission signal type: If transmitting high-frequency RF signals, such as GPS, Bluetooth, antenna and other systems in cars, it is necessary to choose Fakra cable specifications with good RF performance, which have the characteristics of low loss, low standing wave ratio, etc., to ensure the quality and stability of signal transmission. If only transmitting general control signals or low-frequency data, with relatively low requirements for RF performance, more ordinary specifications can be chosen.

Application scenario environment: If used in high temperature environments, such as in the engine compartment of a car, Fakra cables with high temperature resistant insulation and sheath materials should be selected to ensure stable performance of the cables at high temperatures and prevent aging and damage. In damp or corrosive environments such as car chassis, cables with good waterproof, moisture-proof, and corrosion-resistant properties are required.

Transmission distance requirements: When the transmission distance is short, the attenuation requirements for the cable are relatively low, and specifications with thinner cores and lower costs can be selected. If the transmission distance is long, in order to reduce signal attenuation, ensure signal strength and quality, it is necessary to choose Fakra cable specifications with thicker cores and better transmission performance.

Pay attention to performance parameters

Rated voltage and current: It is necessary to ensure that the rated voltage and current of the selected Fakra cable can meet the requirements of the equipment and have a certain margin.

Characteristic impedance: For RF signal transmission, characteristic impedance is an important parameter. Common Fakra cable characteristic impedances include 50 Ω and 75 Ω. The selection should be based on the interface impedance and transmission requirements of the equipment to ensure impedance matching between the cable and the equipment, in order to reduce signal reflection and loss.

Shielding performance: If there is strong electromagnetic interference in the usage environment or high requirements for signal anti-interference, such as near the engine, motor and other equipment in the automotive electronic system, it is necessary to choose Fakra cables with good shielding performance, such as cables with double-layer shielding or high coverage shielding layers.