DigiKey strikes again !

I got another part discontinuation email from DigiKey today.  I've seen the BF256B notice three times now, first in January and then in June - I guess it's good they repeated them because I didn't remember the exact number.

https://wb9kzy.blogspot.com/2025/01/these-are-never-good-news.html 

https://wb9kzy.blogspot.com/2025/06/another-one-bites-dust.html 

However this time they also included the MMBF5486 which is a surface mount JFET, so it's not just the TO-92 parts, in other words, it's not just leaded parts, also surface mounted parts.

On a different note, I was looking at the 2SK-152 JFET mentioned here:

https://wb9kzy.blogspot.com/2022/09/sony-2010-jfet-problems.html 

I noticed an interesting grounded gate amplifier circuit on the data sheet.  Did a little more searching and found a datasheet with better resolution here:

https://www.silicon-ark.co.uk/datasheets/2sk152-datasheet-english.pdf 

Here is a screen shot:

The datasheet is also available in this Bitsavers scanned databook:

http://www.bitsavers.org/components/sony/1992_Sony_Discrete_Semiconductor_Data_Book.pdf 

But unfortunately the diagram doesn't show the biasing, just labeling two points Vs and Vd - I'm stumped :)

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm