2SC2884 2SC2884 PY1 2SC2884(RANGE:100-200) 2SC2884(RANGE:160-320) 2SC2884Y 2SC2884-Y 2SC2884-Y TE12L 2SC2884-Y(TE12L，C) 2SC2884-Y(TE12LCF 2SC2884-Y/PY