Agreed!
Be specially careful with RF transistors, and other specialty/high
priced ICs and special purpose transistors.
I have ordered several on eBay and received counterfeits.
Thanks
73
Jim W7RY
On 1/9/2019 9:22 AM, Manfred Mornhinweg wrote:
Ulf, David,
I did a google search for the Crydom CSD2525P SSR but I can't find
any datasheet - could it be a "special" for some particular
application and is incompatible with what you are trying to do?
Indeed - I couldn't find a datasheet either! The closest seems to be
the CSW2425, which is a snubberless, zero-crossing triggering,
antiparallel SCR SSR. Snubberless is definitely not the right kind to
use here, and zero-crossing triggering also leads to more trouble than
advantages when controlling transformers.
But that's for the CSW2425, not what you have...
Ulf, maybe you got a Chinese "eBay special" devices - which means
fakes! In that case nobody can tell what's really inside your little
black boxes. There are quite a few crooks in China re-labeling ultra
cheap or defective parts to look like more expensive, famous-branded
ones. But the practice seems to be getting less common. Lately almost
all parts I have ordered from China were real. Emphasis on "almost".
Manfred
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