BUL128D-B
TRANS NPN 400V 4A TO220Manufacturer: STMicroelectronics
Categories: Single Bipolar Transistors
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STMicroelectronics BUL128D-B is a high-voltage NPN bipolar junction transistor designed for robust power switching applications. This component features a 400V collector-emitter breakdown voltage and a continuous collector current capability of 4A, with a maximum power dissipation of 70W. The Vce saturation voltage is specified at 500mV maximum at 1A base current and 4A collector current, while the DC current gain (hFE) is a minimum of 12 at 2A collector current and 5V collector-emitter voltage. The transistor is housed in a standard TO-220-3 through-hole package, suitable for mounting on heat sinks. The BUL128D-B is typically employed in power supply units, lighting control, and industrial motor drive circuits. Operating temperature range is up to 150°C (TJ).
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: 14 week(s)Product Status: Last Time BuyPackaging: TubeDatasheet:Download Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | TO-220-3 |
| Mounting Type | Through Hole |
| Transistor Type | NPN |
| Operating Temperature | 150°C (TJ) |
| Vce Saturation (Max) @ Ib, Ic | 500mV @ 1A, 4A |
| Current - Collector Cutoff (Max) | 250µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 12 @ 2A, 5V |
| Frequency - Transition | - |
| Supplier Device Package | TO-220 |
| Current - Collector (Ic) (Max) | 4 A |
| Voltage - Collector Emitter Breakdown (Max) | 400 V |
| Power - Max | 70 W |
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