The Service Module (SVM) is under the responsibility of Thales Alenia Space (TAS). TAS is also responsible of the construction of the satellite which comprises the SVM and also the Paylaod Module (PLM) shown on the figure below.

The SVM sub-systems include the sunshield, the star trackers and gyros, the thrusters, the micro-motions and slews control systems, with hydrazine and cold gas tanks, the Attitude and Orbital Control System (AOCS), the solar panel and electric power system, the thermal regulation system and the downlink communication system.

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Overview of the spacecraft. These artist views are based on the CAD drawings by Thales Alenia Space, Italy and Airbus (Defence and Space) , France.- © ESA

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Overview of the spacecraft with distribution of responsibilities of the Service Module (SVM) and sun shield, the Payload Module (PLM) and the scientific instruments VIS ans NISP. The artist impression is based on the CAD drawings by Thales Alenia Space, Italy and Airbus (Defence and Space), France.- © ESA

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Detailed views of the spacecraft elements. The left panel shows the satellite inside the top end of the Soyuz Fregate rocket.