| Equivalent | 2SC1278S | |
| Type | Transistor Silicon NPN | |
| Case | TO92 | |
| Manufacturer | NEC | |
| Vbr CBO | 150 | |
| Vbr CEO | 130 | |
| Max. PD (W) | 250m | |
| C(ob) (F) | 4.5p | |
| Derate (Amb) (W/°C) | 2.5m | |
| hfe | 100 | |
| Ic Max. (A) | 50m | |
| Icbo Max. @Vcb Max. (A) | 100n | |
| Polarity | NPN | |
| Trans. Freq (Hz) Min. | 150M | |
| @VCE (test) (V) | 3.0 | |
| Oper. Temp (°C) Max. | 125 | |
| @Ic (A) | 1.0m | |
| Pinout Equivalence Number | 3-10 | |
| Surface Mounted Yes/No | NO | |
| Maximum Collector Power Dissipation (Pc) | 0.25 W | |
| Maximum Collector-Base Voltage |Vcb| | 150 V | |
| Maximum Emitter-Base Voltage |Veb| | 5 V | |
| Maximum Collector Current |Ic max| | 0.05 A | |
| Max. Operating Junction Temperature (Tj) | 175 °C | |
| Transition Frequency (ft): | 75 MHz | |
| Forward Current Transfer Ratio (hFE), MIN | 50 | |
| SKU | 85724 | |