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| Image | ![]() |
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| Part Number | 2N2857UB | 2N2857 |
| Manufacturer | Microsemi Corporation | Microsemi Corporation |
| Series | - | - |
| Package/Case | 3-SMD, No Lead | TO-206AF, TO-72-4 Metal Can |
| Packaging | Bulk | Bulk |
| Product Status | Obsolete | Obsolete |
| Transistor Type | NPN | NPN |
| Voltage - Collector Emitter Breakdown (Max) | 15V | 15V |
| Frequency - Transition | - | 500MHz |
| Noise Figure (dB Typ @ f) | 4.5dB @ 450MHz | 4.5dB @ 450MHz |
| Gain | 21dB | 12.5dB ~ 21dB @ 450MHz |
| Power - Max | 200mW | 200mW |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 30 @ 3mA, 1V | 30 @ 3mA, 1V |
| Current - Collector (Ic) (Max) | 40mA | 40mA |
| Operating Temperature | -65°C ~ 200°C (TJ) | -65°C ~ 200°C (TJ) |
| Grade | - | - |
| Qualification | - | - |
| Mounting Type | Surface Mount | Through Hole |
| Supplier Device Package | UB | TO-72 |
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