SAE J1939 Insights

What is SAE J1939?

SAE J1939 is a set of standards defining a communication protocol for the electronic control units (ECUs) used in heavy-duty vehicles like trucks, buses, and construction equipment. It uses a Controller Area Network (CAN) bus to facilitate communication between different vehicle components, such as the engine, transmission, and braking system. J1939 enables these components to share data and coordinate their actions, leading to improved vehicle performance, diagnostics, and overall efficiency.

Find organizations using SAE J1939 on Sumble →

What other technologies are related to SAE J1939?

SAE J1939 Competitor Technologies

LIN

LIN (Local Interconnect Network) is a lower-cost, lower-speed communication protocol often used for less critical functions. While it can coexist, it's a competitor to CAN/J1939 for certain applications.

mentioned alongside SAE J1939 in 1% (252) of relevant job posts

CANopen

CANopen is another higher-layer protocol built on CAN, like J1939, but focuses on general-purpose industrial applications, making it a competitor in some areas.

mentioned alongside SAE J1939 in 3% (76) of relevant job posts

Ethernet

Ethernet, especially automotive Ethernet, is being used in some automotive applications as a backbone network, competing with CAN/J1939 for higher bandwidth applications.

mentioned alongside SAE J1939 in 0% (124) of relevant job posts

SAE J1939 Complementary Technologies

Controller Area Network (CAN)

SAE J1939 is built on top of CAN. CAN is a communication protocol and physical layer standard on which J1939 operates.

mentioned alongside SAE J1939 in 22% (71) of relevant job posts

ISOBUS

ISOBUS (ISO 11783) is closely related to J1939 as it also uses CAN for communication in agricultural vehicles and implements. It complements J1939 in the agricultural domain.

mentioned alongside SAE J1939 in 14% (62) of relevant job posts

CAN

Redundant entry, same as the first one. SAE J1939 relies on CAN.

mentioned alongside SAE J1939 in 1% (520) of relevant job posts