What other factors should be considered when purchasing J1939 cables besides price?

What other factors should be considered when purchasing J1939 cables besides price?

When purchasing J1939 cables, in addition to price, the following factors need to be considered:

Specification and compatibility: The J1939 protocol has multiple electrical and physical layer specifications, and it is necessary to ensure that the cable complies with relevant standards, such as SAE J1939/11, SAE J1939/12, etc. At the same time, matching cable connectors should be selected based on the interface type and pin definition of the device being used to ensure perfect compatibility with diagnostic interfaces, controllers, and other components of the vehicle or equipment.

Quality and performance: Priority should be given to cables that use high-quality conductor materials (such as high-purity copper) and insulation materials to reduce resistance, minimize signal attenuation and interference, and ensure the stability and reliability of signal transmission. At the same time, check the shielding layer of the cable. A good shielding layer can effectively prevent external electromagnetic interference. For example, cables with double-layer shielding or aluminum foil shielding can better adapt to complex electromagnetic environments.

Length: Determine the appropriate cable length based on the actual usage scenario. Short cables may not meet the device connection requirements, while long cables may cause signal attenuation. The general principle is to choose shorter cables to ensure signal quality while meeting the connection requirements.

Brand and reputation: High quality cables from manufacturers are usually more guaranteed in terms of product quality, performance, and after-sales service..

Flexibility and Durability: Consider the flexibility of cables to facilitate wiring and bending in different installation positions and space conditions. At the same time, cables should have sufficient durability to withstand certain tensile, compressive, and wear forces, and adapt to vehicle vibration, temperature changes, and other usage environments.