Post History
I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt: ... My question i...
#8: Post edited
by
Nick Alexeev
·
2023-07-28T00:29:40Z (over 1 year ago)
#7: Post edited
by
Lorenzo Donati
·
2023-07-27T22:53:45Z (over 1 year ago)
#6: Post edited
by
Lorenzo Donati
·
2023-07-08T17:16:41Z (over 1 year ago)
Are a JFET's I<sub>DSS</sub> and Vgs(off) values correlated?
- Are a JFET's Idss and Vgs(off) values correlated?
#5: Post edited
by
Lorenzo Donati
·
2023-07-08T17:16:15Z (over 1 year ago)
Are a JFET's Idss and Vgs(off) values correlated?
- Are a JFET's I<sub>DSS</sub> and Vgs(off) values correlated?
#4: Post edited
by
Lorenzo Donati
·
2023-07-08T17:15:27Z (over 1 year ago)
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
- My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}$?
- Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)}$ values?
Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
- My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}$?
- Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)}$ values?
- Bonus points if the answers are not only based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
#3: Post edited
by
Lorenzo Donati
·
2023-07-08T17:14:39Z (over 1 year ago)
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}?- Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)}$ values?
- Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
- My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}$?
- Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)}$ values?
- Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
#2: Post edited
by
Lorenzo Donati
·
2023-07-08T17:13:43Z (over 1 year ago)
Typos in math formatting.
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
- My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}?
Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)} values?- Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
- I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
- 
- ...
- 
- My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}?
- Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)}$ values?
- Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.
#1: Initial revision
by
Lorenzo Donati
·
2023-07-08T17:11:32Z (over 1 year ago)
Are a JFET's Idss and Vgs(off) values correlated?
I know that many JFETs parameters have a very large manufacturing spread, in particular, $I_{DSS}$ and $V_{GS(off)}$, as one can see (for example) in this datasheet excerpt:
...
My question is if the spread of these two parameters are somewhat correlated, that is: do we know whether part specimens with higher (in magnitude) $I_{DSS}$ will also have higher (in magnitude) $V_{GS(off)}?
Or can we have any combination of $I_{DSS}$ values vs. $V_{GS(off)} values?
Bonus points if the answers not only is based on referenced statistical data, but also explains why the correlation exists (if it does), e.g. by mentioning factors in the manufacturing process that cause the correlation to exist.