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The TLP184(GB.SE) is a high-speed, low-power MOS FET photorelay from Toshiba. It consists of a photo-sensitive IC chip, an LED and a MOS transistor, mounted in a single 4-pin SOT-23 package. This photorelay is designed to detect optical signals and switch low-voltage and low-current electronic circuits with maximum rate of 50MHz. It can be used in a wide range of applications, including power supply protection, display driving, home and office automation, sensing and automated control. This photorelay offers high switching speed, low-power consumption, wide operating temperature range, and high noise immunity.