Found on 5 components on 2 boards.
What K3M is
- MMBTA42 - drives the fb opto (on 5 of the parts below ยท 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 K3M), 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 KW181 - main board · Q15
Part: MMBTA42
drives the fb opto
Marking from our stocked MMBTA42 - not read off this one
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Qsc KS118 - power board · Q12
Part: MMBTA42
lineuv bjt mmbta42 or mmsta42
Marking from our stocked MMBTA42 - not read off this one
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Part: MMBTA42
marking k3m
Marking from our stocked MMBTA42 - not read off this one
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