i found a jfet -----sst441

[john-china]

does anyone know sst441?
refer to http://www.datasheetcatalog.com/data.../SST441.shtml.

is it ok for input circuit of amplifer instead of 2sk389,2sj109 ?

give me some comment ,thx.

[Zen Mod]

Originally posted by john-china
does anyone know sst441?
refer to http://www.datasheetcatalog.com/data.../SST441.shtml.

is it ok for input circuit of amplifer instead of 2sk389,2sj109 ?

give me some comment ,thx.

well - transconductance is twice smaller than in case of 2SK389 ;

if that is good enough for circuit - just go for it ;

safe bet is place two instead one 2SK389

it's same as U441

[spencer]

What about noise comparision?