Found on 1 component on 1 board, in SOT143B package.
What 1KW is
- BCV61B - npn transistors (SOT143B · on 1 of the parts below)
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 1KW), or from a different maker. Check the package and what the part does in the circuit before replacing it.
Where it's been found
Electro-voice ELX200-18SP - main board · T10 TENTATIVE
Part: BCV61B
SOT143B · npn transistors
Show on the board