104 CAPACITOR
The 3 digit code 104 written over ceramic capacitor indicates its value.
The first two digits (10) of this code are first two digits of capacitor value and third digit (4) gives the number of zeroes to be added so as to get capacitor value in picofarads which is 10,0000 pF or 0.1 uF
104 = 10,0000pF or 0.1uF