| 2SA1666 Datasheet |
| Type | Transistor Silicon PNP | |
| Case | SOT23 | |
| Manufacturer | Hitachi | |
| Polarity | PNP | |
| Maximum Collector Power Dissipation (Pc) | 0.1 W | |
| Maximum Collector-Base Voltage |Vcb| | 20 V | |
| Maximum Emitter-Base Voltage |Veb| | 7 V | |
| Maximum Collector Current |Ic max| | 0.2 A | |
| Max. Operating Junction Temperature (Tj) | 135 °C | |
| Transition Frequency (ft): | 160 MHz | |
| Forward Current Transfer Ratio (hFE), MIN | 180 | |
| SMD Transistor Code | YI- | |
| SKU | 343079 | |