OPB815WZ
Overview
The OPB815WZ is a wide-gap slotted optical switch featuring a 9.53mm (0.375 inch) sensing distance and a phototransistor output. It utilizes an infrared LED and a NPN silicon phototransistor mounted on opposite sides of a wide deep slot, making it ideal for detecting opaque objects in mechanical systems. This specific variant comes pre-wired with 24-inch, 26 AWG stranded UL-rated leads for easy integration without PCB mounting.
Why Choose This Part
The 9.53mm wide slot allows for significant mechanical play or the use of thick interrupter flags that would not fit in standard 3mm slots. Its chassis-mount housing and pre-wired 24-inch leads eliminate the need for a dedicated PCB at the sensing point, simplifying remote installations. The phototransistor output supports a collector-emitter breakdown voltage up to 30V, providing flexibility for different logic levels.
Applications
Key Specifications
Getting Started
When integrating the sensor, ensure a current-limiting resistor is placed in series with the LED to maintain forward current below 50mA. Use a pull-up resistor on the phototransistor collector to create a digital logic signal for your microcontroller or PLC. For best results, ensure the interrupter material is completely opaque to infrared light to maximize the contrast ratio between open and blocked states.
