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| Part Number | KSC1008CYBU | KSC1008YBU | KSC1009CYBU | KSC1008COBU | 
|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | onsemi | onsemi | Fairchild Semiconductor | 
| Product Status | Obsolete | Active | Obsolete | Obsolete | 
| Transistor Type | NPN | NPN | NPN | NPN | 
| Current - Collector (Ic) (Max) | 700 mA | 700 mA | 700 mA | 700 mA | 
| Voltage - Collector Emitter Breakdown (Max) | 60 V | 60 V | 140 V | 60 V | 
| Vce Saturation (Max) @ Ib, Ic | 400mV @ 50mA, 500mA | 400mV @ 50mA, 500mA | 700mV @ 20mA, 200mA | 400mV @ 50mA, 500mA | 
| Current - Collector Cutoff (Max) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 120 @ 50mA, 2V | 120 @ 50mA, 2V | 120 @ 50mA, 2V | 70 @ 50mA, 2V | 
| Power - Max | 800 mW | 800 mW | 800 mW | 800 mW | 
| Frequency - Transition | 50MHz | 50MHz | 50MHz | 50MHz | 
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | 
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | TO-226-3, TO-92-3 (TO-226AA) | 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 | TO-92-3 | TO-92-3 |