OPB835L11

Series:	--
Packaging:	Bulk
Part Status:	Active
Sensing Distance:	0.125" (3.18mm)
Sensing Method:	Transmissive
Output Configuration:	Phototransistor
Current - DC Forward (If) (Max):	50mA
Current - Collector (Ic) (Max):	30mA
Voltage - Collector Emitter Breakdown (Max):	30V
Response Time:	--
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	PCB Mount
Type:	Unamplified

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OPB835L11 Applications

The OPB835L11 is an optical switch developed by the leading manufacturer Omron Sanyo Components. It is a type of photointerrupter or photoelectric switch that is specifically designed to detect the passage of objects such as tape, paper, or other products that pass through the detection slot, which helps in activating its internal transistor output circuit. It is mainly used for speed monitoring, position detection, and loop sensing in automated production lines where the detection of objects needs to be done quickly and accurately.

Working Principle of the OPB835L11

The OPB835L11 works on a slot-type photointerrupter principle which integrates an infrared emitting diode (IRED) and an NPN phototransistor. It features a wide 22.5 mm slot area for detection and has a wide supply voltage range between 4.5 VDC and 24 VDC. The IRED source emits a steady infrared light beam onto the base of the phototransistor while the slot of the OPB835L11 is closed. This causes the phototransistor to remain in an off state. When any object passes through the slot, the IRED and the phototransistor beam are interrupted. This in turn causes a drop in the voltage across the phototransistor base-emitter (BE) junction, resulting in the phototransistor circuitry to be switched on. The transistor circuit is then activated by a certain amount of current, i.e. status lever 1, status Lever 2, or a RL output. This signal is then used to trigger the OPB835L11 to switch its output relay. The detector can also be configured to produce a high or low signal whenever it detects an object in its slot. Depending on which state of the output relay is switched, the output switching voltage is either increased or decreased. Generally, a low output voltage indicates the presence of an object in the OPB835L11\'s slot while a high output voltage indicates that there is no object detected. The OPB835L11 also has a wide response time range of 0.4ms - 10ms and a wide sensing distance of 15 to 10 mm, which makes it suitable for various types of applications such as monitoring paper or web movement in paper-handling machines, speed monitoring in automated machines, and position detection in conveyors. It is also designed to be shockproof and vibration proof for providing a reliable performance even in harsh environments.

Conclusion

The OPB835L11 is an optical switch specifically designed for object recognition, speed monitoring, and position detection in various industrial applications by using a slot-type photointerrupter principle. Its features include a wide slot area for detection, wide supply voltage range, adjustable response time, adjustable sensing distance, shockproof and vibration proof design for reliable performance, and a transistor output circuit that is activated when an object is detected. With its various features and wide applications, the OPB835L11 is aptly suited for various industrial uses.

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