Small Signal Transistors - TO-18 Case
Central Semiconductor offers a range of small signal transistors in the TO-18 case, designed for various applications including RF/IF oscillation, amplification, switching, and low-noise operations. These transistors are characterized by key electrical parameters such as breakdown voltages (BVCBO, BVCEO, BVEBO), leakage current (ICBO), DC current gain (hFE), saturation voltage (VCE(SAT)), output capacitance (Cob), transition frequency (fT), noise figure (NF), and switching times (ton, toff). The product line includes both NPN and PNP types, catering to diverse circuit designs.
Product Attributes
- Brand: Central Semiconductor
- Case Style: TO-18
Technical Specifications
| TYPE NO. | DESCRIPTION | BVCBO (V) | BVCEO (V) | BVEBO (V) | ICBO @ VCB (mA) | hFE @ IC (mA) | VCE @ IC (V) | VCE (SAT) @ IC (V) | Cob (pF) | fT (MHz) | NF (dB) | ton (ns) | toff (ns) |
| 2N957 | NPN RF/IF OSC | 40 | 20 | 5.0 | - | - | - | - | 45 | - | 10 | 10 | - |
| 2N978 | PNP AMPL/SWITCH | 30 | 20 | 5.0 | 5.0 | 10 | 15 | 60 | 150 | 45 | 40 | - | - |
| 2N995 | PNP SAT SWITCH | 20 | 15 | 4.0 | 0.005 | 15 | 35 | 140 | 20 | 1.0 | 0.2 | 20 | 10 |
| 2N996 | PNP SAT SWITCH | 15 | 12 | 4.0 | 0.005 | 10 | 35 | - | 20 | 1.0 | 0.3 | 60 | 10 |
| 2N1991 | PNP AMPL/SWITCH | 30 | 20 | 5.0 | 5.0 | 10 | 15 | 60 | 150 | 45 | 40 | - | - |
| 2N2205 | NPN SAT SWITCH | 25 | 12 | 3.0 | 0.025 | 15 | 20 | - | 10 | 1.0 | 0.22 | 10 | 6.0 |
| 2N2220 | NPN AMPL/SWITCH | 60 | 35 | 5.0 | 0.01 | 50 | 20 | 60 | 150 | 10 | 0.4 | 150 | 8.0 |
| 2N2221A | NPN AMPL/SWITCH | 75 | 40 | 6.0 | 0.01 | 60 | 40 | 120 | 150 | 10 | 0.3 | 150 | 8.0 |
| 2N2222A | NPN AMPL/SWITCH | 75 | 40 | 6.0 | 0.01 | 60 | 100 | 300 | 150 | 10 | 0.3 | 150 | 8.0 |
| 2N2242 | NPN SAT SWITCH | 15 | 15 | 5.0 | - | - | - | 40 | 120 | 10 | 1.0 | 0.3 | 10 | 6.0 |
| 2N2368 | NPN SAT SWITCH | 40 | 15 | 4.5 | 0.4 | 20 | 20 | 60 | 10 | 1.0 | 0.25 | 10 | 4.0 |
| 2N2369A | NPN SAT SWITCH | 40 | 15 | 4.5 | 0.4 | 20 | 40 | 120 | 10 | 0.35 | 0.25 | 30 | 4.0 |
| 2N2377 | PNP AMPL/SWITCH | 25 | 25 | 10 | 1.0 | 25 | 15 | 120 | 1.0 | 6.0 | - | - | - |
| 2N2378 | PNP AMPL/SWITCH | 10 | 10 | 10 | 0.1 | 10 | 15 | - | 5.0 | 0.5 | 0.15 | 5.0 | 12 |
| 2N2411 | PNP SAT SWITCH | 25 | 20 | 5.0 | 0.01 | 25 | 20 | 60 | 10 | 0.5 | 0.2 | 10 | 5.0 |
| 2N2412 | PNP SAT SWITCH | 25 | 20 | 5.0 | 0.01 | 25 | 40 | 120 | 10 | 0.5 | 0.2 | 10 | 5.0 |
| 2N2475 | NPN SAT SWITCH | 15 | 6.0 | 4.0 | 0.5 | 5.0 | 30 | 150 | 20 | 0.4 | 0.4 | 1.0 | 3.0 |
| 2N2483 | NPN LOW NOISE | 60 | 60 | 6.0 | 0.01 | 45 | 40 | 120 | 0.01 | 5.0 | 0.35 | 1.0 | 6.0 |
| 2N2484 | NPN LOW NOISE | 60 | 60 | 6.0 | 0.01 | 45 | 100 | 500 | 0.01 | 5.0 | 0.35 | 1.0 | 6.0 |
| 2N2501 | NPN SAT SWITCH | 40 | 20 | 6.0 | - | - | - | 50 | 150 | 10 | 1.0 | 0.2 | 10 | 4.0 |
| 2N2509 | NPN LOW NOISE | 124 | 80 | 7.0 | 0.005 | 100 | 25 | - | 0.01 | 5.0 | 1.0 | 5.0 | 6.0 |
| 2N2510 | NPN LOW NOISE | 100 | 65 | 7.0 | 0.005 | 80 | 150 | 500 | 10 | 5.0 | 1.0 | 5.0 | 6.0 |
| 2N2511 | NPN LOW NOISE | 80 | 50 | 7.0 | 0.005 | 60 | 240 | 750 | 10 | 5.0 | 1.0 | 5.0 | 6.0 |
| 2N2539 | NPN SAT SWITCH | 60 | 30 | 5.0 | 0.25 | 40 | 50 | 150 | 150 | 10 | 0.45 | 150 | 8.0 |
| 2N2540 | NPN SAT SWITCH | 60 | 30 | 5.0 | 0.25 | 40 | 100 | 300 | 150 | 10 | 0.45 | 150 | 8.0 |
| 2N2586 | NPN LOW NOISE | 60 | 45 | 6.0 | 0.200 | 45 | 120 | 360 | 0.01 | 5.0 | 0.5 | 10 | 7.0 |
| 2N2645 | NPN AMPL/SWITCH | 75 | 40 | 7.0 | 0.01 | 60 | 100 | 300 | 150 | 10 | 0.4 | 10 | 25 |
| 2N2651 | NPN SAT SWITCH | 40 | 20 | 5.0 | 0.03 | 20 | 25 | - | 10 | 1.0 | 0.25 | 10 | 4.0 |
| 2N2710 | NPN SAT SWITCH | 40 | 20 | 5.0 | 0.03 | 20 | 40 | - | 10 | 1.0 | 0.25 | 10 | 4.0 |
| 2N2837 | PNP AMPL/SWITCH | 50 | 35 | 5.0 | 0.1 | 30 | 30 | - | 150 | 10 | 1.0 | 150 | 25 |
| 2N2838 | PNP AMPL/SWITCH | 50 | 35 | 5.0 | 0.1 | 30 | 75 | - | 150 | 10 | 1.0 | 150 | 25 |
| 2N2845 | NPN SAT SWITCH | 60 | 30 | 5.0 | 0.2 | 30 | 30 | 120 | 150 | 10 | 1.0 | 500 | 8.0 |
| 2N2847 | NPN SAT SWITCH | 60 | 20 | 5.0 | 0.2 | 30 | 40 | 140 | 150 | 10 | 0.75 | 500 | 8.0 |
| 2N2861 | PNP LOW NOISE | 25 | 20 | 5.0 | - | - | - | 30 | 120 | 0.01 | 5.0 | 0.2 | 10 | 6.0 |
| 2N2862 | PNP LOW NOISE | 25 | 20 | 5.0 | - | - | - | 12 | 120 | 0.01 | 5.0 | 0.2 | 10 | 6.0 |
| 2N2894 | PNP SAT SWITCH | 12 | 12 | 4.0 | 0.08* | 6.0 | 40 | 150 | 30 | 0.5 | 0.5 | 100 | 6.0 |
| 2N2894A | PNP SAT SWITCH | 12 | 12 | 4.0 | 0.05 | 10 | 30 | - | 10 | 0.3 | 0.13 | 10 | 4.5 |
| 2N2895 | NPN AMPL/SWITCH | 120 | 65 | 7.0 | 0.002 | 60 | 40 | 120 | 150 | 10 | 0.6 | 150 | 15 |
Note: ICES and ICEV are indicated where applicable. Some devices may have specific plating options (TIN/LEAD or PBFREE) available upon request. Please refer to the ordering instructions for details.
The provided data also includes information on product discontinuations and replacements. For specific details on EOL (End of Life) products and their suggested replacements, please refer to the relevant Product Notification Documents (PDN01000, PDN01192, PDN01229) available on the Central Semiconductor website.
Central Semiconductor offers design support, including free quick ship samples, online technical data, SPICE models, and custom electrical curves. For inquiries regarding product plating, custom development, or finding alternate sources for discontinued parts, please contact Central Semiconductor.
Contact Information:
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2410311056_Central-2N2368-PBFREE_C21584134.pdf
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TO18 Small Signal Transistor Central 2N2368 PBFREE Suitable for RF IF Oscillation and Amplification Needs Images
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