SI-200 bus system is based on the RazakSAT (aka MACSAT) bus technology, which is being jointly developed with ATSB of Malaysia for its national space program. SI-200 bus is designed for Low Earth Orbit small satellite missions. It can accommodate various kinds of payloads for electro-optical Earth observation, telecommunications, and space science by offering relatively large payload space. This bus system can be flexibly re-configurable to adapt different mission and user requirements. This system is an attractive platform for small satellite missions with the following characteristics: