2SB1219A-Q 2SB1219A-Q(TX) 2SB1219AR 2SB1219A-R 2SB1219A-R(D.R) 2SB1219A-R(TX) 2SB1219A-R/DR 2SB1219A-R/Q(TX) 2SB1219ARL 2SB1219ARLMR