I have two small yellow capacitors. One has the markings "721 AFH" on one side and "AV3 C5K" on the other side. The other capacitor has "104 E5M" on one side and "741 AFN" on the other side. How can I find out the capacitances and voltage ratings of both? Google searches have revealed nothing unfortunately. Pic related, both caps look the same apart from the markings.