Used Cisco Catalyst 6500 Switches With industry-leading services and performance, the Cisco Catalyst 6500 Series Switch is Cisco’s flagship switching solution. It delivers the most comprehensive feature sets for core, distribution, wiring closet, data center, enterprise WAN routing, and Metro-Ethernet deployments.
Cisco WS-X6148-GE-TX Switch. Catalyst 6500 48 Pt 10/100/1000 Base T. Quick view. Choose Options. Cisco WS-X6516-GE-TX Switch. CATALYST 6500 16PT COPPER MOD X-BAR. NEW ... 2N3904 fT 250 300 − − MHz Output Capacitance (VCB = 5.0 Vdc, IE = 0, f = 1.0 MHz) Cobo − 4.0 pF Input Capacitance (VEB = 0.5 Vdc, IC = 0, f = 1.0 MHz) Cibo − 8.0 pF Input Impedance (IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz) 2N3903 2N3904 hie 1.0 1.0 8.0 10 k Voltage Feedback Ratio (IC = 1.0 mAdc, VCE = 10 Vdc, f = 1.0 kHz) 2N3903 2N3904 hre 0.1 0.5 5.0 8.0 X 10−4
Features, Applications: NPN silicon planar switching transistors. Fast switching devices exhibiting short turn-off and low saturation voltage characteristics. The Cisco Catalyst 6500 Borderless Services Node integrates the Cisco Catalyst 6500 Series/7600 Series Wireless Services Module (WiSM) and the Cisco Catalyst 6500 Series Firewall Services Module with the Cisco Catalyst 6500 Virtual Switching Supervisor Engine 720. Ethernet Interface Modules As the premier Cisco ® modular multilayer switch, the Cisco Catalyst ® 6500 Series delivers secure, converged services from the wiring closet to the core, to the data center, and to the WAN edge. The Cisco Catalyst 6500 Series provides the broadest selection of 10/100 and 10/100/1000 The 96-port 10/100 module (part number WS-X6148X2-RJ-45) doubles the port density in the system by allowing it to expand from 48 ports to 96 ports per slot with the addition of a splitter (included), typically mounted at the patch panel. At 20mA, that's about 120 Ohms. The current gain depends on the collector current, but figure on 50. With a base current of 20mA, that's a collector current of way more than the 2N3904 can handle, so 20mA will saturate it thoroughly. You can probably get by with a lower base current. Look at a 2N3904 datasheet for gain at different collector ...
Data Sheet (current) [683 KB ] ST MICRO [69 KB ] ... TRANSISTOR, 2N3904, NPN GENERAL PURPOSE, SMALL SIGNAL, 40V, TO-92 For more about Transistors, click here.