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| Part Number | FMMT614TC | FMMT624TC | FMMT617TC | FMMT619TC | FMMT618TC | FMMT634TC | FMMTA14TC | FMMT614QTC | FMMT614TA | 
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | 
| Product Status | Active | Active | Active | Active | Obsolete | Obsolete | Obsolete | Active | Active | 
| Transistor Type | NPN - Darlington | NPN | NPN | NPN | NPN | NPN - Darlington | NPN - Darlington | NPN - Darlington | NPN - Darlington | 
| Current - Collector (Ic) (Max) | 500 mA | 1 A | 3 A | 2 A | 2.5 A | 900 mA | 300 mA | 500 mA | 500 mA | 
| Voltage - Collector Emitter Breakdown (Max) | 100 V | 125 V | 15 V | 50 V | 20 V | 100 V | 40 V | 100 V | 100 V | 
| Vce Saturation (Max) @ Ib, Ic | 1V @ 5mA, 500mA | 250mV @ 50mA, 1A | 200mV @ 50mA, 3A | 220mV @ 50mA, 2A | 200mV @ 50mA, 2.5A | 960mV @ 5mA, 1A | 900mV @ 100µA, 100mA | 1V @ 5mA, 500mA | 1V @ 5mA, 500mA | 
| Current - Collector Cutoff (Max) | 10µA | 100nA | 100nA | 100nA | 100nA | 100nA | 100nA | 10µA | 10µA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 15000 @ 100mA, 5V | 300 @ 200mA, 10V | 300 @ 200mA, 2V | 200 @ 1A, 2V | 200 @ 2A, 2V | 20000 @ 100mA, 5V | 20000 @ 100mA, 5V | 15000 @ 100mA, 5V | 15000 @ 100mA, 5V | 
| Power - Max | 500 mW | 625 mW | 625 mW | 625 mW | 625 mW | 625 mW | 330 mW | 500 mW | 500 mW | 
| Frequency - Transition | - | 155MHz | 120MHz | 165MHz | 140MHz | 140MHz | - | - | - | 
| 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) | -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 | Surface Mount | 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 | 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 | TO-236-3, SC-59, SOT-23-3 | 
| Supplier Device Package | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 |