The best I can suggest is to infer the pinout by looking at the placement of the pins on the back-side in relation to the various cathodes visible from the front. I did this with a similar display (SP-151). The anodes are copper-colored electrodes; everything else is a cathode. The segment current is probably 335uA, assuming this is the same size as other Sperry (Beckmann) displays from this era. I recall the ionization voltage is 180V, and the sustaining voltage is around 135V.
The smaller objects (triangles, dots, etc) will run at less current. I guesstimated 35uA for my wristwatch; I'll know in a few weeks if the numbers I gave are good when I finally power it on. These displays dont have pins on 0.1" coordinates, so you cant put them into a predrilled breadboard. Do not try to force it into a 0.1" grid because there will be excess stress on the pins, and it could cause the glass envelope to break. When I made my PCB footprint for the SP-151, I had to carefully measure (and re-measure, many times) all of the pin locations with a caliper. I'm happy to say the display fits onto the PCB. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b87cb809-72b8-4505-ba31-d584bb72e060%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
