I needed a U1899 fet to repair and old instrument. In my search for data I found this data booklet. So here it is, in case it may be of use for others:
http://bitsavers.informatik.uni-stuttgart.de/components/siliconix/_dataBooks/1986_Siliconix_FET_Databook.pdf
It is too large for upload. Should the one at the link disappear I have a copy.
(This part of the diyaudio site seems to "self-oscillate" the most about old parts. One of the admins might move it to a better location - thanks).
http://bitsavers.informatik.uni-stuttgart.de/components/siliconix/_dataBooks/1986_Siliconix_FET_Databook.pdf
It is too large for upload. Should the one at the link disappear I have a copy.
(This part of the diyaudio site seems to "self-oscillate" the most about old parts. One of the admins might move it to a better location - thanks).