- 2N1031
- Germanium Power Devices Corp.
- Germanium Power Transistors
- 2N1031A
- Germanium Power Devices Corp.
- Germanium Power Transistors
- 2N1031B
- Germanium Power Devices Corp.
- Germanium Power Transistors
- 2N1031C
- Germanium Power Devices Corp.
- Germanium Power Transistors
- 2N1031
- Solidev Semiconductors
- Solid State Products (Transistor Guide)
- 2N1031A
- Solidev Semiconductors
- Solid State Products (Transistor Guide)
- 2N1031B
- Solidev Semiconductors
- Solid State Products (Transistor Guide)
- 2N1031C
- Solidev Semiconductors
- Solid State Products (Transistor Guide)