FAIRCHILD SEMICONDUCTOR QSD123.. 光电开关
The is a NPN Silicon Infrared Phototransistor is suitable for QED12X/QED22X/QED23X notched emitter. It has 24° narrow reception angle and a daylight filter. Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.