| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
22,096 pcs
|
22096 pcs | On Request | 1 | On Request | On Request | 14+ | On Request | On Request | |
|
4,500 pcs
|
4500 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Automotive Grade | |
| Current | |
| DC Current Gain (hFE) (Min) @ Ic, Vce | |
| Industrial Grade | |
| Medical Grade | |
| Military Grade | |
| Mounting Type | |
| Operating Temperature | |
| Power | |
| Storage Temperature | |
| Supplier Device Package | |
| Tape & Reel | |
| Transistor Type | |
| Vce Saturation (Max) @ Ib, Ic | |
| Voltage |
The BUL742C is a high voltage fast-switching NPN power transistor manufactured by STMicroelectronics using high voltage multi-epitaxial planar technology. It is designed for high switching speeds and high voltage capability, making it suitable for electronic ballast for fluorescent lighting and switch mode power supplies.
Key electrical specifications include a collector-emitter voltage (VCEO) of 400 V, collector-emitter voltage (VCES) of 1050 V with base-emitter shorted, collector current of 4 A continuous (8 A peak), and base current of 2 A (4 A peak). Power dissipation is 70 W at case temperature 25 °C. DC current gain (hFE) ranges from 25 to 50 at IC = 0.8 A, VCE = 3 V. Collector-emitter saturation voltage is 1.5 V maximum at IC = 3.5 A, IB = 1 A. Switching times are specified with storage time 2.4 µs typical and fall time 350 ns typical.
The device is offered in a TO-220 through-hole package with an isolation voltage of 1500 V RMS. Operating junction temperature maximum is 150 °C, storage temperature range is -65 °C to 150 °C. Thermal resistance junction-to-case is 1.79 °C/W.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.95 | $1.95 |
| 10+ | $0.93 | $0.93 |
| 100+ | $0.76 | $0.76 |
| 500+ | $0.66 | $0.66 |
| 1,000+ | $0.58 | $0.58 |
| 2,500+ | $0.49 | $0.49 |
| 5,000+ | $0.47 | $0.47 |
| 10,000+ | $0.46 | $0.46 |
| 25,000+ | $0.45 | $0.45 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The collector-emitter voltage (VCEO) is 400 V with zero base current.
The continuous collector current is 4 A, with a peak current of 8 A for pulses less than 5 ms.
The device is available in a TO-220 through-hole package.
The maximum operating junction temperature is 150 °C. Storage temperature ranges from -65 °C to 150 °C.
The component is listed as RoHS3 Compliant, but this status is unverified and should be confirmed with official documentation.
The typical fall time is 350 ns, with a maximum of 500 ns under specified test conditions.
At IC = 0.8 A, VCE = 3 V, the DC current gain ranges from 25 minimum to 50 maximum, with a typical value of 35.