| 2SD1841 Datasheet |
| Type | Transistor Silicon NPN | |
| Case | TO3P | |
| Manufacturer | Sanyo Semiconductor | |
| Polarity | NPN | |
| Maximum Collector Power Dissipation (Pc) | 120 W | |
| Maximum Collector-Base Voltage |Vcb| | 110 V | |
| Maximum Collector Current |Ic max| | 25 A | |
| Max. Operating Junction Temperature (Tj) | 150 °C | |
| Forward Current Transfer Ratio (hFE), MIN | 25 | |
| SKU | 84586 | |