Found on 1 component on 1 board, in SOT23 package.
What 1G is
- IRLML2502 - MOSFET N-CH 20V 4.2A SOT-23 (SOT23 · on 1 of the parts below · in our catalogue with this marking)
One code, more than one part. SMD marking codes are short, and manufacturers reuse them: the same code can be a different part in a different package
(a SOT-23 transistor and a SOD-123 diode can both be marked 1G), or from a different maker. Check the package and what the part does in the circuit before replacing it.
Where it's been found
Qsc K12.2 - power board · Q16
Part: IRLML2502
SOT23 · audio drivers vcc +12vlow regulator mosfet.
Marking from our stocked IRLML2502 - not read off this one
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