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| Part Number | MMBT6429LT1G | MMBT6427LT1G | MMBT6428LT1G | MMBT6429LT1 | 
|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | onsemi | 
| Product Status | Active | Active | Active | Obsolete | 
| Transistor Type | NPN | NPN - Darlington | NPN | NPN | 
| Current - Collector (Ic) (Max) | 200 mA | 500 mA | 200 mA | 200 mA | 
| Voltage - Collector Emitter Breakdown (Max) | 45 V | 40 V | 50 V | 45 V | 
| Vce Saturation (Max) @ Ib, Ic | 600mV @ 5mA, 100mA | 1.5V @ 500µA, 500mA | 600mV @ 5mA, 100mA | 600mV @ 5mA, 100mA | 
| Current - Collector Cutoff (Max) | 100nA | 1µA | 100nA | 100nA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 500 @ 100µA, 5V | 20000 @ 100mA, 5V | 250 @ 100µA, 5V | 500 @ 100µA, 5V | 
| Power - Max | 225 mW | 225 mW | 225 mW | 225 mW | 
| Frequency - Transition | 700MHz | - | 700MHz | 700MHz | 
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | 
| Supplier Device Package | SOT-23-3 (TO-236) | SOT-23-3 (TO-236) | SOT-23-3 (TO-236) | SOT-23-3 (TO-236) |