KTC4373 and KTA1661 possibly. Look up the datasheets and confirm that they're the right part.
As a side note, photos would have helped because the 2-letter markings are used for multiple transistors and the case style and the markings have to be used to match them up. Even then, it's not always definitive.
As a side note, photos would have helped because the 2-letter markings are used for multiple transistors and the case style and the markings have to be used to match them up. Even then, it's not always definitive.
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