What Does The 20Y Mean?

[Einric]

Simply put, what does the 20Y mean?

 

[Tube_Dude]

Simply put, what does the 20Y mean?

Simply answered: 😉

20 - Lot No

Y - hfe Rank ( 90 to 180 )

 

[Einric]

Awesome so All 12 of each I have are from the same lot and Hfe rank.
This should make using them in a new project a lot simpler.

Thank You

 

[Tube_Dude]

Here you have some more relevant information...

http://www.sanken-ele.co.jp/en/prod/semicon/pdf/2sa1694e.pdf

Good luck with your project! 😉

 

[Einric]

I don't know what the project will be but at least I have a small pile of Audio Transistors to play with.