2SB439
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PNP Silicon Power Output Transistor for Audio Frequency, TO-3, Toshiba, Industry Equals: 2SB439, 2SB554, NTE181
Madison TV 3 - C14
PNP Silicon Power Output Transistor for Audio Frequency, TO-3, Toshiba, Industry Equals: 2SB439, 2SB554, NTE181