Vishay’s take on the 1N4148 data sheet (PDF), describing it as a switching diode. ... They have none of the special skills you’d find in tunnel, Gunn, varicap, Zener, and avalanche diodes, ...

Varactor (or “varicap”) ... There are other benefits to using a DAC to bias a varactor diode. For example, multiple-output-channel DAC devices can be used in a multistage application.

The diode sampler is the electronic equivalent of a stroboscope, capturing parts of multiple cycle of a waveform to give a much-slowed-down representation of it on the screen.

The four-layer diode was the key to William Shockley's plan to revolutionize AT&T's phone system. It was a great device in theory, but not in practice -- at least not at the time when Shockley ...