Okay, I'm building a serial link cable for my TI calculator and the plans call for two zener diodes. What exactly is a zener diode? Is that just a regular diode, because I have some diodes, and if ...

The QuiC SLED light emitting diode and its photodiode counterpart, the PDQ, use InAs-GaSb p-i-n superlattices for emission and detection, cascaded with tunnel junctions. Variable-period superlattices ...