Help identifying tantalum capacitor marked E105
"105" usually means 10 pF x 100000. The "5" parts represents the number of zeros in the multiplier. "104" would be 100 nF. "103" would be 10 nF and "102" would be 1 nF.

Many companies use "E" to symbolize 25 volts and, as an example I've seen "A" used to represent 4.0 volts, B to represent 6.3 volts, C to represent 10 volts, D to represent 15 (or sometimes 16) volts hence, E represents 25 volts.

But, there are other code systems for the capacitor's voltage rating such as this: -



However, and luckily, E represents 25 volts in both systems. Another system that also uses "E" to represent 25 volts: -