This post explains for transistor.
The Part Number is A1270, 2SA1270.
The function of this semiconductor is PNP Silicon Epitaxial Planar Transistor.
The package is TO-92 Type.
Manufacturer: SEMTECH
Preview images :
Description
The A1270 is PNP Silicon Epitaxial Planar Transistor for switching and general purpose applications.
The transistor is subdivided into two groups O and Y according to its DC current gain. On special request, these transistors can be manufactured in different pin configurations. TO-92 Plastic Package Weight approx. 0.19g.
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A1270 Datasheet
