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i have a ac stabilizer in that relay driver transistor is not working, i cannot find the transistor data sheet any where the number seen in that chip is
I assume this is out of a HBL product. If so this is their internal part number and you will have to contact them for the manufacture's part number or a replacement unless someone on this forum has a parts list or schematic.
It is most likely a MOSFET given the application and package. A few quick measurements of the control voltage swing, supply voltage, and the current requirements for the relay you could identify whether it is a N or P channel and the current rating. From there finding a replacement would be easy.
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