Found on 2 components on 2 boards, in TO220F package.
What A1837 is
- 2SA1837 - pnp bce pre-driver (TO220F · on 2 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 A1837), or from a different maker. Check the package and what the part does in the circuit before replacing it.
Where it's been found
Crest CC5500 - main board · Q305
Part: 2SA1837
TO220F · pnp bce pre-driver
Marking from our stocked 2SA1837 - not read off this one
Show on the board
Peavey PV1500 - right amp board · Q105
Part: 2SA1837
Marking from our stocked 2SA1837 - not read off this one
Show on the board