5answers

[Others] Anyone know what is this?

"222" marked on top of it and EF label on the PCB. Found it in a old Casiotone keyboard.
  • answered Sep 11,2020
    by Gorge
Ranking Name Answers
1 PCBWay Team 5
2 Alice Brown 2
3 Engineer 1
4 Julian Eballa 1
5 James Youngs 1