Basically, I want to know if a certain optocouple (reflective sensor) is still in production. The part number is OTR641.
I can find references to it in google, but I can’t find availability information. I pretty much take this to be a bad sign, but I remain somewhat hopeful.
The two top component distibutors I deal with, DigiKey and Allied Electronics, do not carry that part number. I’d suggest trying to locate an equivalent, instead.
If you are only looking for a couple of pieces (say for a repair) most of those hits you found were for distributors, who may be sitting on stock, even if the part isn’t being manufactured any more.