j1939 is short called for On-Board Diagnostics,whose standard is defined by SAE,Society of Automotive Engineers in 1988, to be designed for monitoring vehicle exhaust emissions in current time. Nowaday, have been widely used in car diagnostics, the defined port is shown as below diagram

Material: PA66, tined plated compliant ROHS,

Working temperature: -20~80°C

Over-molding: customized

Pitch: 4mm

Voltage: 12V for car and 24V for heavy vehicl