Hello,
I have an optical sensor with no writing that is helpful. What are some ways to identify a replacement?
The pictures show two different boards one is missing the sensor.
Greetings,
The format is what we’d call a slot-type photointerruptor, which get divided into “logic output” and “transistor output” types based on whether the output has provisions to process a signal and provide an amplified binary output, versus simply presenting the raw signal from a phototransistor.
It’s common for the former type to have 5 leads due to the need to provide power to the output-side to run the signal conditioning and the latter to have only 4. Not a hard and fast rule, but in any case I’d suspect that’s a transistor output type.
The sensing distance attribute there should correlate to the slot width, and it looks like you’ve got a through hole mounting type. Apply any other info you can glean from the circuit (e.g. if the output is switching a 24v signal, you wouldn’t pick a device rated for only 12…) and start looking through datsheets to find candidates that’d fit the footprint.