- 2N4909
- Advanced Semiconductor, Inc.
- Silicon Transistor Selection Guide
- 2N4909
- Api Electronics, Inc.
- Short form transistor data
- 2N4909
- Fairchild Semiconductor
- Full Line Condensed Catalogue 1977
- 2N4909
- Microsemi Corp.
- 10 A, 80 V, PNP, Si, POWER TRANSISTOR, TO-3
- 2N4909
- Ppc Products Corporation
- Transistor Short Form Data
- 2N4909.MOD
- Semelab Plc.
- 10 A, 80 V, PNP, Si, POWER TRANSISTOR, TO-204AA
- 2N4909
- Semiconductors, Inc.
- Power Transistors
- 2N4909
- Solidev Semiconductors
- Solid State Products (Transistor Guide)