Schottky barrier diodes
Schottky barrier diodes
(OP)
Hi all,
Could anyone remind me what is the purpose of such parts ? Especially the reverse caracteristic ?....am forgetting something here... :(
Could anyone remind me what is the purpose of such parts ? Especially the reverse caracteristic ?....am forgetting something here... :(





RE: Schottky barrier diodes
From what I recall:
> fast, having low storage time
> low forward voltage, thus making Schottky TTL possible
> soft reverse characteristics
TTFN
RE: Schottky barrier diodes
Many thanks for your prompt response.
Cheers,
V.
RE: Schottky barrier diodes
They are usually quoted at Tj=+125C MAX. But further down in the datasheets tests are shown at Tamb=+125C.
How do we determine the Max T ambient they can at ?
Cheers,
V.
RE: Schottky barrier diodes
Suppose the device is dissipating 1W. If the thermal resistance from junction to ambient is 10degC/W, the junction will be 10degC hotter than the ambient, making the maximum ambient 115degcC if the junction has to be kept to 125degC. It is just as simple as this.
If the device were to be dissipating a negligible amount of power, it would be able to run to the full 125degC ambient. You see this expressed as power derating curves against ambient temperature.
RE: Schottky barrier diodes