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| Part Number | BC639RL1G | BC639ZL1G | BC635RL1G | BC637RL1G | BC639RL1 | 
|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | onsemi | onsemi | 
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | 
| Transistor Type | NPN | NPN | NPN | NPN | NPN | 
| Current - Collector (Ic) (Max) | 1 A | 1 A | 1 A | 1 A | 1 A | 
| Voltage - Collector Emitter Breakdown (Max) | 80 V | 80 V | 45 V | 60 V | 80 V | 
| Vce Saturation (Max) @ Ib, Ic | 500mV @ 50mA, 500mA | 500mV @ 50mA, 500mA | 500mV @ 50mA, 500mA | 500mV @ 50mA, 500mA | 500mV @ 50mA, 500mA | 
| Current - Collector Cutoff (Max) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 40 @ 150mA, 2V | 40 @ 150mA, 2V | 40 @ 150mA, 2V | 40 @ 150mA, 2V | 40 @ 150mA, 2V | 
| Power - Max | 625 mW | 625 mW | 625 mW | 625 mW | 625 mW | 
| Frequency - Transition | 200MHz | 200MHz | 200MHz | 200MHz | 200MHz | 
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | 
| Package / Case | TO-226-3, TO-92-3 Long Body (Formed Leads) | TO-226-3, TO-92-3 Long Body (Formed Leads) | TO-226-3, TO-92-3 Long Body (Formed Leads) | TO-226-3, TO-92-3 Long Body (Formed Leads) | TO-226-3, TO-92-3 Long Body (Formed Leads) | 
| Supplier Device Package | TO-92 (TO-226) | TO-92 (TO-226) | TO-92 (TO-226) | TO-92 (TO-226) | TO-92 (TO-226) |