| Manufacturer | Part Number | Description |
|---|---|---|
| ETC Unknown Manufacturer | 2SB173 | Ge PNP Alloy Junction Transistor |
ROHM |
2SB1731 | Low frequency amplifier |
ROHM |
2SB1733 | PNP Middle Power Transistor |
ROHM |
2SB1732 | Genera purpose Transistors |
ROHM |
2SB1730 | General purpose Transistors |
| 2SB1734 | Silicon PNP epitaxial planar type Transistor | |
| 2SB1739 | / NPN Epitaxial Planar Silicon Transistors |