The F Diminished Arpeggio contains the following notes:
F – Ab – Cb
It is essentially an F minor chord, with a flat 5.
Here’s how to play the F diminished arpeggio in the open position.
F Diminished Arpeggio CAGED Positions
Here are the 5 CAGED positions for the F diminished arpeggio on the guitar (notes and tabs).