The requested file:
https://pdf.datasheetcatalog.com/datasheet/stmicroelectronics/4127.pdf
is the data sheet for the following electronic components:

ST Microelectronics

#	Part Name	Description
1	BD433	COMPLEMENTARY SILICON POWER TRANSISTORS
2	BD434	COMPLEMENTARY SILICON POWER TRANSISTORS
3	BD435	COMPLEMENTARY SILICON POWER TRANSISTORS
4	BD436	COMPLEMENTARY SILICON POWER TRANSISTORS
5	BD437	COMPLEMENTARY SILICON POWER TRANSISTORS
6	BD438	COMPLEMENTARY SILICON POWER TRANSISTORS

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