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| Part Number | STLD128DNT4 | 
| Datasheet | STLD128DNT4 datasheet | 
| Description | TRANS NPN 400V 4A DPAK | 
| Manufacturer | STMicroelectronics | 
| Series | - | 
| Part Status | Active | 
| Transistor Type | NPN | 
| Current - Collector (Ic) (Max) | 4A | 
| Voltage - Collector Emitter Breakdown (Max) | 400V | 
| Vce Saturation (Max) @ Ib, Ic | 1V @ 400mA, 2A | 
| Current - Collector Cutoff (Max) | 250µA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 8 @ 2A, 5V | 
| Power - Max | 20W | 
| Frequency - Transition | - | 
| Operating Temperature | 150°C (TJ) | 
| Mounting Type | Surface Mount | 
| Package / Case | TO-252-3, DPak (2 Leads + Tab), SC-63 | 
| Supplier Device Package | DPAK |