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O140 is a reflective gallium arsenide (PIN) single-pole, double-throw MMIC switch chip with an operating frequency of 10 to 24 GHz. The switch chip can be easily used throughout the operating frequency band. With excellent switching characteristics and port standing wave characteristics over the entire operating frequency range, it is ideally suited for microwave hybrid integrated circuits and multi-chip modules as well as low-power systems. The switch chip adopts on-chip through-hole metallization process to ensure good grounding, no additional grounding measures are needed, and the use is simple and convenient. The backside of the chip is metallized and suitable for eutectic sintering or conductive adhesive bonding processes.