| Part Number | FMMT634TA | FMMT634TC | 
|---|---|---|
| Manufacturer | Diodes Incorporated | Diodes Incorporated | 
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single | 
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| Product Status | Active | Obsolete | 
| Transistor Type | NPN - Darlington | NPN - Darlington | 
| Current - Collector (Ic) (Max) | 900 mA | 900 mA | 
| Voltage - Collector Emitter Breakdown (Max) | 100 V | 100 V | 
| Vce Saturation (Max) @ Ib, Ic | 960mV @ 5mA, 1A | 960mV @ 5mA, 1A | 
| Current - Collector Cutoff (Max) | 100nA | 100nA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 20000 @ 100mA, 5V | 20000 @ 100mA, 5V | 
| Power - Max | 625 mW | 625 mW | 
| Frequency - Transition | 140MHz | 140MHz | 
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 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 |