2SC1815Y(F) 2SC1815-Y(F) 2SC1815-Y(SP 2SC1815-Y(SP，F，T) 2SC1815-Y(SP.F.T) 2SC1815-Y(T2SP 2SC1815-Y(TE2 2SC1815-Y(TE2) 2SC1815-Y(TE2，F) 2SC1815Y(TE2,F,T)