Part Number Replace Part Summary Case Pinout BC338 NPN Silicon BC635, BC637, BC639, 2SD667BC635 2N5818 KT504B =BC 337, 30V BC338L NPN Silicon =BC338 =BC 338 BC338P NPN Silicon =BC338BC635 2N6016 KT3102D =BC 338 TBC338 NPN Silicon =BC338BC635 2N5818 KT504B =BC 338