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S8550 can be directly replaced by 9012, 2N5401 and 2N2907 PNP transistors. The power and voltage of these transistors are all within the allowable value of S8850, and the shape and pin arrangement are the same, so they are completely replaceable.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

S8550 can be directly replaced by 9012, 2N5401 and 2N2907 PNP transistors. The power and voltage of these transistors are all within the allowable value of S8850, and the shape and pin arrangement are the same, so they are completely replaceable.

Under specific circumstances, such as the realization of detection or as a switch and other functions, it can be replaced by 9012, 9015, 2N5551, 3DG12, etc., in some circuits, the S8050 magnification requirements are very high, can not be replaced at will, must be replaced with the original parameter tube, otherwise the circuit can not work normally.

Extended data:

Selection and replacement of Triode:

1. First of all, it is necessary to compare the parameters. If you do not know the parameters, you can first search his specification book on the Internet.

two。 Know the parameters, especially the BVCBO,BVCEO,BVEBO,HFE,ft,VCEsat parameters. Through the comparison of various parameters, find similar products.

S8550 features:

1. Dissipated power PCM: 0.625 W (ambient temperature 25 ℃)

two。 Collector current ICM: 0.5A

3. Collector-base voltage V (BR) CBO: 40 V.

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