Description: The OPB610 and OPB620 slotted optical switches consist of an infrared emiƫng diode and an NPN silicon phototransistor with an enhanced low current roll-off to improve contrast ratio and immunity to background irradiance. The OPB611, OPB621 slotted optical switch consists of an infrared emiƫng diode and a PIN photodiode with a polysulfone housing that is opaque to visible light, but transmissive to infrared. The low tr/tf of the PIN photodiode is ideal for highspeed operation. The sensitivity to ambient radiation is minimized. Features: • Non-contact switching • Printed circuit board mounting • Enhanced signal to noise ratio • PIN photodiode sensor for high speed (OPB611, OPB621) • Lead centers: 0.275: (OPB61_) / 0.320” (OPB62_) Applications: • Non-contact reflective object sensor • Assembly line automation • Machine automation • Machine safety • End of travel sensor • Door sensor
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