Filed under schematics, the 39.8 KB PDF 2SD2441 with an E tag refers by its JIS-style 2SD prefix to an NPN bipolar transistor. No laptop, board number or manufacturer appears in the name. Expect a short part sheet with maximum ratings, electrical characteristics and outline dimensions, viewable in any PDF reader. In repair work it helps identify emitter, base and collector for meter checks and evaluate substitutes. Compare the marking on the part itself, which may read D2441, before relying on this data.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
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