I think it is a 5 wire unipolar, I have similar ones.
I guess that it is a discontinued version that Minebea no longer make, but they have kept the model number and replaced it with 4 wire bipolar version. The picture of the 5 wire one above doesn't match any of the ones in their current product lineup.
I guess that it is a discontinued version that Minebea no longer make, but they have kept the model number and replaced it with 4 wire bipolar version. The picture of the 5 wire one above doesn't match any of the ones in their current product lineup.