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

Micro Electronics

#	Part Name	Description
1	BC177	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
2	BC178	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
3	BC179	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
4	BC257	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
5	BC258	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
6	BC259	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
7	BC307	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
8	BC308	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
9	BC309	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
10	BC320	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
11	BC321	PNP SILICON PLANAR EPITAXIAL TRANSISTORS
12	BC322	PNP SILICON PLANAR EPITAXIAL TRANSISTORS

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