What's on the workbench?

[jessenator]

Is this YAK ?

 

[owlexifry]

Is this YAK ?

FWW Plus — Barber Electronics

www.barberelectronics.com

OD-1 based. keen to try.

 

[Robert]

 

[jessenator]

View attachment 101520

View attachment 101519

Did he buy those from 2D503Bs you, @Robert ?

Also, why the 253? All I can divine from the datasheet is wider operating temp range...