2SB857-D-TN3-T 2SB857-D-TN3-R 2SB857-D-TN3-K 2SB857-D-T6CT 2SB857-D-T6CR 2SB857-D-T6CK 2SB857-D-BP 2SB857-C-TN3-T 2SB857-C-TN3-R 2SB857-C-TN3-K