Just curious if diodes develope over last years like transistors?

[Miyuki]

Hi,
I'm curious if is some progress in Silicone diode technology like at transistors current densities/conductivity and other parameters. Transistors have new models every year with better and better parameters but what diodes? Are they already at limits of technology? Only new thing I know is SiC diodes but they are quite expensive and not yet available at higher current ratings. 

[German_EE]

Well, there has been some progress. We started off with point contact diodes using Germanium then switched to junction diodes using silicon. Now we have schottky diodes that have a much lower voltage drop. We also have diodes that can operate as high as microwave frequencies. Some progress then.

Finally, silicone is used to give women bigger chests and waterproof bathrooms, silicon is used in semiconductor devices 

[Miyuki]

I mean progress in recent year like from 2000 or from 80s when first IGBT begins

[uncle_bob]

I mean progress in recent year like from 2000 or from 80s when first IGBT begins

Hi

Simple answer- no.

More complex answer: The voltage drop on a diode at a specific current level has progressed, but not by 2X every 2 years. The speed of a diode capable of carrying a lot of current has gotten better. Again, not by 2X every 2 years ...

Bob

[rrinker]

 Seems like the venerable 1N400X series has been around forever. But it gets the job done, and they are cheap. A few of the things I do need a little bit better switching speed, but that's why there's the 1N4148. The REALLY high speed stuff, I'd have to ask my friend, he's the RF and microwave engineer. Other than processor clocks, the fastest thing I have going is just a few KHz.

[tszaboo]

There is nothing really to improve. Your voltage level determines the geometries, the materials you use the voltage. If you add more die area, you get lower voltage for the same current.
If you need lower drop, or higher current (so, basically lower drop) use active parts with gate. There are plenty of ideal diode controllers, but making one is also almost trivial.