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Thread: What is this? Transistor right?

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    Default What is this? Transistor right?

    The one with SCW on it in the red square. And where can I get a replacement? It has become heat sensitive and only works when it is hot. Tested extensively with cold spray and then a 3 second touch with soldering iron, and it works. Unfortunately there are no markings around it (Q number, etc.) and no schematic.



    Thanks!

    Jerry

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    Looks a lot like a SOT23 type transistor. You'd have to remove it from the board and find some device to test it with to work out a suitable replacement. You'd be wise to check the rest of the circuit as well, as something else probably caused it to fail.
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    Default

    Yeah.... transistor. But without markings, who knows what kind.

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    Yes, this type of transistor wants to get in cool. So use effective cooling device like cooling fan.

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