| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
720 pcs
|
720 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Manufacturer Name | |
| Current | |
| DC Current Gain (hFE) (Min) @ Ic, Vce | |
| Mounting Type | |
| Power | |
| Supplier Device Package | |
| Tape & Reel | |
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| Vce Saturation (Max) @ Ib, Ic | |
| Voltage |
The BUL1203E is a high voltage fast-switching NPN power transistor manufactured by STMicroelectronics using Diffused Collector technology. It is designed for electronic ballast applications in fluorescent lighting, supporting 277V half bridge and 120V push-pull topologies.
Key electrical specifications include a collector-emitter voltage (VCEO) of 550V, collector-base voltage (VCBO) of 1200V, and emitter-base voltage (VEBO) of 9V. The continuous collector current rating is 5A, with a peak current capability of 8A. Power dissipation is 100W at 25°C case temperature. The device offers a DC current gain (hFE) ranging from 10 to 32 under various test conditions, and low collector-emitter saturation voltage (0.5V max at 1A, 0.7V max at 2A, 1.5V max at 3A). Switching speeds are fast with typical turn-on time of 2.5µs, storage time of 0.2µs, and fall time of 0.5µs.
The transistor is housed in a TO-220-3 through-hole package with a junction-to-case thermal resistance of 1.25°C/W. The intrinsic ruggedness of the device allows it to withstand high collector current during breakdown conditions without external transil protection. Storage temperature range is -65 to 150°C, and maximum junction temperature is 150°C.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.50 | $2.50 |
| 10+ | $1.23 | $1.23 |
| 100+ | $1.10 | $1.10 |
| 500+ | $0.88 | $0.88 |
| 1,000+ | $0.81 | $0.81 |
| 2,000+ | $0.74 | $0.74 |
| 5,000+ | $0.68 | $0.68 |
| 10,000+ | $0.66 | $0.66 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The VCEO rating is 550V.
Continuous collector current is 5A, with peak current up to 8A.
It is supplied in a TO-220-3 through-hole package.
The maximum operating junction temperature is 150°C.
It is listed as RoHS3 Compliant, but this is unverified.
hFE typically ranges from 10 to 32 depending on test conditions (IC and VCE).
Typical switching times: turn-on 2.5µs, storage 0.2µs, fall 0.5µs.