2.5k ohm 1% 1/4 Watt Resistor (Box of 5000) - MFRThese are Metal Film Resistor with a value of 2. 5k ohm 1 4W and tolerance of 1%. These Axial resistors are cylindrical in shape with copper plated steel leads extending from each end. Metal Film Resistor limit the flow of electric current using a Metal Film. The printed colour code rings, which are Red, Green, Black, Brown, Brown for these 2K5 resistors, make it easy to identify the value of these resistors. Specification Resistance Value 2. 5k ohm

which are Black

Supply Voltage  17V

These op-amps are well specified under industrial and automotive ranges

The TOSHIBA TLP541G is a  programmable Controller

high frequency inverters

7M resistors

It has an Analog comparator

5 V - 6 V Package DIP

this device also provides an affordable way to drive power MOSFETs and bipolar transistors

Surge Overload Rating to 400A Peak

These are Metal Film Resistor with a value of 13k ohm 1/4W and tolerance of ±1%

Used as a switching device