Been down this road more times than I can count. Tiny yellow tantalum cap, almost no marking, code that looks meaningless. Here's what worked for me. First, the code on the body is ussually a date or lot code, not the capacitance or voltage, so stop trying to decode it into specs. Measure the thing instead. Length and width in mm narrow it down to a package size, and the color plus a polarity bar tells you it's almost certainly a tantalum.
Next, work out what the circuit actually needs. Find where the cap sits on the board. If it's on a power rail next to a chip, it's a decoupling or bulk cap and anything with the right capacitance, voltage rating well above the rail, and same footprint will do. If it's in a signal path, be more careful about the exact value.
Then just measure capacitance with a meter if you have one. Comparing against a known good cap of the same physical size from another part of the board helps too, since manufacturers usually use the same part everywhere on one design. Worst case, I replace with a modern polymer part of the same size and a voltage rating comfortably above the rail and it just works. Honestly half these tiny caps are generic once you match the footprint and rating.