- 2N2581
- Api Electronics Group
- 10 A, 400 V, NPN, Si, POWER TRANSISTOR
- 2N2581
- Lucas Semiconductors
- Semiconductor Products
- 2N2581
- Pirgo Electronics, Inc.
- High Voltage Transistors in TO-36 / TO-3
- 2N2581
- Solid Power Corp.
- High Voltage Transistors in TO-36 / TO-3 Package