| Part Number | PN3646 | PN3642 | 
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | 
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Transistor Type | NPN | NPN | 
| Current - Collector (Ic) (Max) | 300 mA | 500 mA | 
| Voltage - Collector Emitter Breakdown (Max) | 15 V | 45 V | 
| Vce Saturation (Max) @ Ib, Ic | 500mV @ 3mA, 300mA | 220mV @ 15mA, 150mA | 
| Current - Collector Cutoff (Max) | 500nA | 50nA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 30 @ 30mA, 400mV | 40 @ 150mA, 10V | 
| Power - Max | 350 mW | 625 mW | 
| Frequency - Transition | - | - | 
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | TO-226-3, TO-92-3 (TO-226AA) | 
| Supplier Device Package | TO-92-3 | TO-92-3 |