2SB745 Transistor
For low-frequency and low-noise amplification.
Complementary to 2SD0661 (2SD661) and 2SD0661A (2SD661A)

2SB649A Transistor
SI-P NF/S/Vid-L 180V 15A 100W 140MHz

2SB647 Tranistor
Low frequency power amplifier
Complementary pair with 2SD667/A

2SB633 Tranistor
85V/6A, AF 25 to 35W Output Applications

2SB539 PNP Power Transistors