BUL128-K
TRANS NPN 400V 4A TO220Manufacturer: STMicroelectronics
Categories: Single Bipolar Transistors
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STMicroelectronics BUL128-K is a high-voltage NPN bipolar junction transistor designed for robust power switching applications. This device features a 400V collector-emitter breakdown voltage and a continuous collector current capability of 4A, with a maximum power dissipation of 70W. Its Vce(sat) is specified at 500mV at 1A/4A, and it offers a minimum DC current gain (hFE) of 14 at 2A/5V. The transistor is housed in a standard TO-220-3 package, suitable for through-hole mounting. It operates reliably across a junction temperature range up to 150°C. The BUL128-K finds application in power supplies, lighting control, and general purpose high-voltage switching circuits.
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDownload 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) | 200µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 14 @ 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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