| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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50,000 pcs
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50000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The BU941 is a high-voltage NPN Darlington power transistor designed by STMicroelectronics for demanding switching applications. It features a collector-emitter voltage rating of 400V (VCEO) and a collector current rating of 15A, with a peak collector current of 30A. The device integrates an antiparallel collector-emitter diode, enhancing its suitability for inductive load switching.
With a maximum power dissipation of 180W at 25°C case temperature and a maximum junction temperature of 200°C, the BU941 is built for high-robustness electronic ignition systems. It offers a minimum DC current gain of 300 at 5A collector current and 10V collector-emitter voltage, ensuring efficient current amplification. The saturation voltages are specified at multiple operating points, with VCE(sat) ranging from 1.6V to 2V depending on collector and base currents.
The device is available in a TO-3 package (TO-204AA) for chassis mounting, providing excellent thermal performance with a junction-to-case thermal resistance of 0.97°C/W. The storage temperature range spans from -65°C to 200°C, supporting operation in harsh environments.
Typical applications include high-robustness electronic ignition systems, where the device's rugged bipolar technology and high operating junction temperature are critical. The BU941 is also suitable for other inductive load switching applications requiring high voltage and current handling capabilities.
| Qty | Low | High |
|---|---|---|
| 400+ | $1.89 | $1.89 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The BU941 has a collector-emitter voltage (VCEO) rating of 400V.
The BU941 has a maximum collector current of 15A, with a peak collector current of 30A.
The BU941 can dissipate up to 180W at a case temperature of 25°C.
The BU941 has a maximum operating junction temperature of 200°C.
The BU941 is available in a TO-3 (TO-204AA) package for chassis mounting.
The BU941 is marked as RoHS3 compliant, but this is unverified and should be confirmed with the manufacturer.
The BU941 has a minimum DC current gain (hFE) of 300 at IC=5A and VCE=10V.