A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

These resistors are typical axial-lead metal film resistors, which have much better temperature stability than their carbon equivalents which provides lower noise and are generally better for high frequency or radio frequency applications.

2n2222 is a bipolar junction transistor with NPN polarity designed to use in general purpose amplification and switching application. The transistor can handle collector current up to 800mA. Its key features are low power, low to medium current, medium voltage, and moderate speed.

The IR Receiver is a type of Diode but different from the LED. It does not emit any light but detects the presence of light. This diode allows some current to pass through it after detecting light and amount of current flow is directly proportional to the amount of light detected and makes a pair with IR transmitter.

Heat Shrink Sleeve 4mm  are excellent for insulation. They have exceptional insulation characteristics, excellent stress control properties; long-term weather and regular wear and tear resistance, ease of installation and reliable performance in even in harshest of the situations.

These High performance 2:1 heat shrink material tubes, bundles, and protects cables; wire and hoses are used for a wide range of DIY applications. It is used extensively for cable and wire harnessing, strain relief, insulation, color-coding, identification, and protection.

These 5mm units have four pins - Cathode is the longest pin. One for each color and a common cathode. Use this one LED for three status indicators or pulse width modulate all three and get mixed colors!

You can make unlimited colours with this just one LED.These LEDs are diffused; so they’ll appear dimmer, but have a wider viewing angle.

12V & 7A Relay Module For Raspberry Pi, Arduino, DSP, AVR, PIC, 8051 and other microcontrollers.

This Relay is used for wide variety of AC & DC applications like Home Automation configured, Solenoids, Motors, lights, fans, heavy load device, home appliances & controlling higher current loads from microcontroller development board.

0402 capacitor is Mounted either by flow or reflow soldering methods and gives excellent dielectric strength due to uniform structure of dielectric layers 

LL34 is a general purpose power switching SMD Zener Diode. SMD diodes LL34  have a range of anode/cathodeidentifiers. Sometimes it’s easiest to just use a multimeter to test for polarity. Turn the multimeter to the diode setting (usually indicated by a diodesymbol), and touch each probe to one of the LEDterminals. … Diodes certainly aren’t the only polarized component.

Replacement of Heating Element for SMD Rework Station.

High heating rate so fast heating up, good insulating property, high efficiency and long life.

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

These resistors are typical axial-lead metal film resistors, which have much better temperature stability than their carbon equivalents which provides lower noise and are generally better for high frequency or radio frequency applications.

The element's compact, ultra-thin design (1.6 mm x 0.8 mm x 0.25 mm) with a wide viewing angle of 120° extends significant advantages for backlighting, indicators, membrane applications, and further enhances design versatility and maneuverability for design engineers developing miniature electronic devices.

Available in multiple colours, this vibrant and low power consumption device operates under current as low as 1 mA and meets industrial temperature ratings of -40°C to +85°C. The distinctive package further provides a remarkable zener diode option to withstand ESD voltage up to 8000 V and provide superior protection against ESD (ElectroStatic Discharge) damages.

2N3904 is a general purpose and very popular NPN Transistor based on Silicon Epitaxial Planar Technology. This NPN transistor finds application in amplification and a simple switching circuit. It comes with a TO-92 package with very less noise. Its pins are compatible with through-hole assembly on PCB.