கொஞ்சம் கெமிஸ்ட்ரி ! - EP.017

 Here are some of the key chemicals used in the electronics industry, along with their roles and applications:

1. Silicon (Si)

   • Role: Primary material for semiconductors

   • Applications: Microchips, integrated circuits, solar cells

2. Gallium Arsenide (GaAs)

   • Role: Semiconductor material with superior electronic properties

   • Applications: High-frequency devices, mobile phones, satellite communications, infrared LEDs

3. Copper (Cu)

   • Role: Conductive material

   • Applications: Wiring, printed circuit boards (PCBs), connectors

4. Silver (Ag)

   • Role: Conductive material with high electrical conductivity

   • Applications: Conductive inks, PCBs, connectors

5. Lead (Pb)

   • Role: Used in soldering

   • Applications: Solder for joining electronic components (Note: Lead-free alternatives are increasingly used due to health concerns)

6. Tin (Sn)

   • Role: Used in soldering

   • Applications: Solder for joining electronic components

7. Gold (Au)

   • Role: Conductive material with excellent corrosion resistance

   • Applications: Connectors, bonding wires, plating for contacts

8. Phosphoric Acid (H₃PO₄)

   • Role: Etching agent

   • Applications: Cleaning and etching of semiconductor wafers

9. Sulfuric Acid (H₂SO₄)

   • Role: Cleaning and etching agent

   • Applications: Cleaning semiconductor wafers, etching PCBs

10. Isopropyl Alcohol (IPA)

    • Role: Cleaning agent

    • Applications: Cleaning electronic components and PCBs

11. Soldering Materials

    • Solder Wire: For hand soldering

    • Solder Paste: Used for surface-mount device (SMD) soldering

    • Solder Bar: For wave soldering and dip soldering

    • Solder Balls: For ball grid array (BGA) packages

    • Flux: Used to clean and prepare surfaces for soldering

12. PCB Chemicals

    • Solder Mask: Protects PCB traces from oxidation and prevents solder bridges

    • Flux Cleaner: Removes flux residues after soldering

    • Degreaser: Cleans PCBs and electronic components

    • Conformal Coating: Protects PCBs from harsh environments

    • Heat-Sink Compound: Enhances heat dissipation from electronic components

13. ESD Protection Materials

    • ESD Mat: Prevents electrostatic discharge damage

    • ESD Clothing: Protects against electrostatic discharge

    • Grounding Material: Ensures proper grounding to prevent static buildup

These chemicals play crucial roles in various stages of electronics manufacturing, from semiconductor fabrication to final assembly, ensuring the performance and reliability of electronic devices