  STx749 Product Selector
STx790A Product Selector
STx888 Product Page
The need to control the charge of batteries in portable equipment such as cellular phones, PDAs, digital cameras and video cameras, coupled with a steady growth in demand, has led power semiconductor manufacturers to enlarge the variety of transistors dedicated to these applications. Consequently, ST has enlarged its product portfolio of low voltage bipolar transistors. In addition to our well-known STT818B, ST is now offering a variety of PNP bipolar transistors, which, due to their electrical characteristics, have been specifically designed for use as final switches for power management circuitry. This new series is manufactured using the Base Island Planar Technology. Compared to the same chip size of previous technologies, a greater current capability (from 1.5 to 2 times) and a reduction in the saturation voltage, V CE(sat), between 30 to 50%, has been achieved.
Sales types such as STD888 and STN888 supplying a very high current value (up to 5A continuous) are able to drive heavy loads.
A wide range of packages, SOT-223, DPAK and TO-92, is now available to cover all application needs. Devices in SOT-223 offer an excellent Rth value in relation to restricted PCB area available. Types housed in DPAK are suitable for all applications where high power and/or superior thermal capabilities are a must. STX790A housed in TO-92 offers the most cost effective solution by saving board space.
Part numbers like STD790A, STN790A and STX790A can sustain a breakdown voltage of V CER >= 60V, as well as meet the standard load dump required in the automotive field.
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Car adaptor battery charger
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Power management
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Very low saturation voltage
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High current
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High gain characteristics
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Low power loss
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| P / N |
VCEO (V) |
VCBO (V) |
IC (A) |
hFE @ ICVCE
min | (A) | (V) |
VCE(sat) @ ICIB
max | (A) | (mA) |
Ptot (W) |
Package |
| STN749 |
25 |
35 |
3 |
75 |
2 |
2 |
0.3 |
1 |
100 |
1.6 |
SOT-223 |
| STD790A |
60* |
60 |
3 |
90 |
3 |
1 |
0.7 |
3 |
30 |
15 |
DPAK |
| STN790A |
60* |
60 |
3 |
90 |
3 |
1 |
0.7 |
3 |
30 |
1.6 |
SOT-223 |
| STX790A |
60* |
60 |
3 |
90 |
3 |
1 |
0.7 |
3 |
30 |
0.9 |
TO-92 |
| STN888 |
30 |
60 |
5 |
75 |
5 |
1 |
0.7 |
5 |
250 |
1.6 |
SOT-223 |
* V CER
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