OPB981N51

Series:	Photologic®
Part Status:	Obsolete
Sensing Distance:	0.125" (3.18mm)
Sensing Method:	Transmissive
Output Configuration:	NPN - Open Collector, Buffer
Mounting Type:	Chassis Mount
Current - Supply:	15mA
Voltage - Supply:	4.75 V ~ 5.25 V
Response Time:	70ns
Operating Temperature:	-40°C ~ 70°C (TA)
Package / Case:	Module, Pre-Wired

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

OPB981N51 Application Field and Working PrincipleOptical Sensors are a type of electronic technology that relies on light waves to control and monitor various types of devices and systems. Among them, Photointerrupters, which are capable of detecting the presence or absence of an object, are widely used.Slot Type Photointerrupters, like OPB981N51, are specifically designed to detect when an object passes through a physical break or gap in the light beam. These sensors use a beam of visible or Infrared light to detect the presence of an object and generate a logic-level output signal. They offer a low operating voltage and low current consumption, making them ideal for both AC and DC applications.The OPB981N51 is a single-channel slot-type photointerrupter with a visible red light emitter and photo-detector of infrared light. It has a narrow gap between the emitter and photo-detector, allowing it to detect small objects positioned in this gap quickly and accurately. Due to its small size, the OPB981N51 is ideally suited for use in small and narrow spaces. Additionally, the device offers high Blocking Voltage up to 70V for reliable operation in noisy environments.The OPB981N51 utilizes a logic output to generate an output signal when an object passes through the light beam gap. When an object is detected, the light emitted by the emitter is blocked and the photo-detector will trigger a logic level output that corresponds to either low voltage (5V) or high voltage (12V).In summary, the OPB981N51 is an ideal single-channel Slot Type Photointerrupter with a logic output for use in both AC and DC applications. It has a narrow gap between the emitter and photo-detector to detect small objects quickly and accurately, and offers high blocking voltage up to 70V for reliable operation in noisy environments.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description