The requested file:
https://pdf.datasheetcatalog.com/datasheet/stmicroelectronics/4103.pdf
is the data sheet for the following electronic components:

ST Microelectronics

#	Part Name	Description
1	BDX53B	COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS
2	BDX53C	COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS
3	BDX54B	COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS
4	BDX54C	COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS

Select the part name and then you can download the datasheet in PDF format.