2SD1820 transistor equivalent, silicon npn epitaxial planer type transistor.
q q
2.0±0.2 1.3±0.1
2.1±0.1 0.425 1.25±0.1 0.425
0.65
Low collector to emitter saturation voltage VCE(sat). S-Mini type package, allowing downsizing of the equipment a.
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