Haven't US fabs been creating "homage" parts for decades? These parts are not "original"
or "genuine". Yet, they are still functionally identical or similar. Also, US fabs have sister
fabs in China, that make bread & butter parts, for which there is no other source.
Fake would imply a part that is marked as one thing, but inside is completely different, or empty,
making them useless. Another type of fake part would be something that has functions
that are close to the original to avoid easy detection. And yet another would be rejects,
that failed for temperature, current, hfe, etc., yet sold as top tier parts.
Here's a link to the datasheets for the LM317; as can be seen, there are dozens of manufactures
for this one part alone:
https://www.alldatasheet.com/view.jsp?Searchword=Lm317
or "genuine". Yet, they are still functionally identical or similar. Also, US fabs have sister
fabs in China, that make bread & butter parts, for which there is no other source.
Fake would imply a part that is marked as one thing, but inside is completely different, or empty,
making them useless. Another type of fake part would be something that has functions
that are close to the original to avoid easy detection. And yet another would be rejects,
that failed for temperature, current, hfe, etc., yet sold as top tier parts.
Here's a link to the datasheets for the LM317; as can be seen, there are dozens of manufactures
for this one part alone:
https://www.alldatasheet.com/view.jsp?Searchword=Lm317