OPB981T11Z

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Optical Sensors provide a solution to the demanding need for non-contact sensing using optical signals. Photointerrupters, a type of optical sensor, make use of the optical properties of light to detect the presence or absence of an object or material. The OPB981T11Z, a slot-type logic output photointerrupter, is best-suited for a wide variety of applications requiring accurate and reliable sensing.

The OPB981T11Z is a compact, highly integrated device that consists of an infrared light emitting diode (LED) and an integrated high-gain photo detector. The sensor features a sensing area with 11mm slot, making it ideal for detecting the presence of objects such as a CD, diskette, or barcode. It has the ability to detect objects through various materials, including paper, cardboard, and thin metal plates, without making direct contact. The OPB981T11Z is highly configurable with adjustable gain and gain compensation control in the photodetector, increasing the sensitivity to near-infrared light sources and making the device insensitive to ambient light changes.

The OPB981T11Z’s sensing area is shielded from ambient light by an opaque shield on the bottom of the slot. When an object passes through the slot, the amount of light passing through is detected by the photodetector. Based on this detected light, the output changes from high to low indicating the presence or absence of an object. The device’s DC type logic output provides two clearly distinguishable output signals when an object is detected. Furthermore, when the device is not used, a low level output current is maintained, allowing the device to operate in extreme conditions.

The OPB981T11Z can operate in temperatures ranging from -20°C to +85°C, and within a wide voltage range from 4.5V to 20V. This makes the device extremely reliable for industrial settings with wide temperature ranges and for consumer applications in both household and commercial appliances. The device is RoHS compliant, making it the most popular choice among the photointerrupter lineup.

In conclusion, the OPB981T11Z’s advanced design, wide operating temperature and voltage range, and RoHS compliance make it the ideal solution for those seeking an accurate and reliable sensing solution for a variety of applications. Its configurable gain and adjustable characteristics increase its sensitivity and make it highly resistant to ambient light changes, ensuring optimal performance in any condition. Any application requiring a reliable, non-contact sensor capable of accurately detecting objects through various materials is well suited for the OPB981T11Z.

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