- 2N2991
- Advanced Semiconductor, Inc.
- Silicon Transistor Selection Guide
- 2N2991
- Api Electronics Group
- 2 A, 80 V, NPN, Si, POWER TRANSISTOR, TO-5
- 2N2991
- Api Electronics, Inc.
- Short form transistor data
- 2N2991
- Silicon Transistor Corp.
- Industrial Grade Power Transistors
- 2N2991
- Microsemi Corp.
- 1 A, 80 V, NPN, Si, POWER TRANSISTOR
- 2N2991
- Ppc Products Corporation
- Transistor Short Form Data
- 2N2991.MOD
- Semelab Plc.
- 1 A, 80 V, NPN, Si, POWER TRANSISTOR, TO-205AA
- 2N2991
- Semicoa Semiconductor
- High Speed Logic Switches / High Current General Purpose Medium Speed Amplifiers
- 2N2991
- Semitronics Corp.
- Silicon Power Transistors
- 2N2991B
- Semitronics Corp.
- Voltage Regulator Diode in Hermetically Sealed Package, 400 Watts Peak Power
- 2N2991
- Solidev Semiconductors
- Solid State Products (Transistor Guide)
- 2N2991
- Solitron Devices, Inc.
- 1 A, 80 V, NPN, Si, POWER TRANSISTOR
- 2N2991
- General Diode
- Transistor Selection Guide