OPB902L55

Series:	Photologic®
Part Status:	Obsolete
Sensing Distance:	0.375" (9.53mm)
Sensing Method:	Transmissive
Output Configuration:	Totem Pole, Inverted
Mounting Type:	Through Hole
Current - Supply:	15mA
Voltage - Supply:	4.75 V ~ 5.25 V
Response Time:	70ns
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	PCB Mount

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Optical sensors are devices that measure light intensity or light duration in order to measure something else, such as vibration, position, speed, or temperature. Photointerrupters are devices that detect the presence or absence of an object in front of them. Slot Type are devices that typically comprise two parts, a light source and a light receiver. The OPB902L55 Logic Output Photointerrupter is a slot type instrument that uses optical properties to detect the presence or absence of an object, and then produce a logic output signal in response.The OPB902L55 is a logic type optosensor, capable of accurately detecting and outputting signals. It is designed to detect the minimal change of the ambient light intensity or the insertion or non-insertion of an object in the detection slot. It features a thin profile, miniature package size, and capable of being used in a variety of application fields.One of the advantages of the OPB902L55 is its dual function of having both light receiving and light emission. When used as a light receiving device, it receives the ambient light emitted by the light source with an area ratio of 1/50 to the detection slot, thereby increasing the responsive distance. When used as a light emitter, it focuses light on the detection slot with an area ratio of 1/70, enabling the device to detect differences in the light intensity at a greater distance than other optosensors.The OPB902L55 has a detection slot of 3.2 mm and a built-in infrared light emitting diode (LED). It can be used in any application that requires detection of the presence or absence of an object, and can be used both indoor and outdoor. The output logic is activated by the presence of the object, and deactivated when the object is no longer present.The working principle of the OPB902L55 is based on a phototransistor. The phototransistor has a junction to which a bias voltage is applied, triggering the switching of the light beam from the LED onto the detector. This phototransistor then acts as a transistor, and the opening and closing of the switch depends on the amount of light received by the detector.When in the OFF state, the OPB902L55 phototransistor keeps the transistor in the OFF state. When light from the LED is sensed by the detector, the phototransistor is triggered, turning ON the transistor and thus the logic output signal is generated. The signal is then used to detect the presence or absence of an object.The OPB902L55 is a versatile, high-performance logic output optosensor. It is used in various fields such as medical, manufacturing, and robotics, as well as automotive, military, and aerospace applications. It is also used in the food and beverage industry where filling machines require small, accurate, and durable optical sensors to detect the presence or absence of objects for efficient and automated production.The OPB902L55 is a reliable, long-lasting device that is designed to provide accurate detection of objects for years of reliable performance. The optosensor also has flexible and adjustable sensitivity settings that allow for the detection of objects over any size and distance, in both light and dark environments.In conclusion, the OPB902L55 Logic Output Photointerrupter is a versatile, reliable, and high-performance optosensor that can be used in a variety of applications. It is a long-lasting, accurate, and durable device that can detect small objects over any size and distance in both light and dark environments.

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