Very small step-up transformers?

Hi,

Does anyone know of an off-the-shelf miniature (1206 or 1210 sized)
transformer I can use for step-up, 3:1 or 4:1 ratio? Frequency is
low under 10 kHz and current is very low, < 20 mA .

I either find huge transformers or tiny RF / single-ended differential
ones...having a hard time with this one.

Thanks for your help!

.

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