H11A2 as bidirectional DC switch?
T Chap
Posts: 4,223
http://www.vishay.com/docs/83730/83730.pdf
I found some of these a local store today and was checking it out as a simple contact closure device driven by the Prop as a substitute for a relay. The application would be as a switch for 5VDC to a processor or other 3rd party opto interfaces. The question is can this be used a a bi directional switch, since it is working fine in both directions with 5V to the Collector and the Emitter going to the Prop input, or vice versa. In one direction, I can get very close to 5V on a meter at the Prop pin. In another I get 4 something, more than enough to be a logic high. The idea is to not need to mark it as polarized so that anyone can connect it with terminal blocks without fear of damage, even on other 3rd party products switching maximum 5V and logic signals only.
I found some of these a local store today and was checking it out as a simple contact closure device driven by the Prop as a substitute for a relay. The application would be as a switch for 5VDC to a processor or other 3rd party opto interfaces. The question is can this be used a a bi directional switch, since it is working fine in both directions with 5V to the Collector and the Emitter going to the Prop input, or vice versa. In one direction, I can get very close to 5V on a meter at the Prop pin. In another I get 4 something, more than enough to be a logic high. The idea is to not need to mark it as polarized so that anyone can connect it with terminal blocks without fear of damage, even on other 3rd party products switching maximum 5V and logic signals only.
Comments
A better choice would be the TLP222a.
http://www.pci-card.com%2FTLP222A.pdf
I think I may have picked up the bidirectional idea from the H11F1 part which does appear to be an AC or DC switch.
Thanks for that link, I will check that part out.