• +86-755-23012705
  • [email protected]
  • Building 3, Jinfeng Industrial Park, Fuyong Street, Baoan District, Shenzhen ,China
Search
Close
logo
  • Home
  • About Us
    • About XPCB
    • Flexible PCB Fabrication
    • PCB Fab Capability
    • PCBA Capability
    • Our Certifications
    • Our Facility
    • Quality Assurance
  • PCB Fabrication
    • Flexible PCB
    • Rigid Flex PCB
    • Rigid PCB
    • ELIC HDI PCB
    • RF PCB
    • Medical PCB
    • Automotive PCB
    • IoT & IIoT PCB
    • Industrial Control PCB
    • Telecommunication PCB
    • Consumer Electronics PCB
  • PCB Assembly
    • Turn Key PCB Assembly
    • Consigned PCB Assembly
    • Components Sourcing
  • Resources
    • PCB Glossary
    • PCB Design Guide
    • PCB Blog
  • Contact
Menu
  • Home
  • About Us
    • About XPCB
    • Flexible PCB Fabrication
    • PCB Fab Capability
    • PCBA Capability
    • Our Certifications
    • Our Facility
    • Quality Assurance
  • PCB Fabrication
    • Flexible PCB
    • Rigid Flex PCB
    • Rigid PCB
    • ELIC HDI PCB
    • RF PCB
    • Medical PCB
    • Automotive PCB
    • IoT & IIoT PCB
    • Industrial Control PCB
    • Telecommunication PCB
    • Consumer Electronics PCB
  • PCB Assembly
    • Turn Key PCB Assembly
    • Consigned PCB Assembly
    • Components Sourcing
  • Resources
    • PCB Glossary
    • PCB Design Guide
    • PCB Blog
  • Contact
Get Instant Quote

4 Common Finish Treatment Methods in PCB Prototyping Stage

The surface treatment methods used by PCB factories in  PCB prototyping are many. Each surface treatment method has its own unique characteristics. Taking chemical silver as an example, its process is extremely simple. It is recommended to use lead-free soldering and smt, especially for The fine line effect is better. The most important thing is to use chemical silver for surface treatment, which will greatly reduce the overall cost and lower cost. Today we will introduce several common surface treatment methods for pcb board proofing.

 

1. HASL

Tin HSAL is a common processing method in the early days of PCB proofing. It is now divided into HASL and lead-free HASL. The advantages of HASL: After the PCB is completed, the copper surface is completely wetted (the tin is completely covered before soldering), suitable for lead-free soldering, the process is mature and low cost, suitable for visual inspection and electrical testing, and it is also a high-quality and reliable PCB board One of the proofing processing methods.

 

2. Chemical Nickel Gold(ENIG)

 

Nickel gold is a relatively large-scale PCB proofing surface treatment process. Remember: the nickel layer is a nickel-phosphorus alloy layer. According to the phosphorus content, it is divided into high-phosphorus nickel and medium-phosphorus nickel. The application is different, so we will not introduce it here. the difference. The advantages of nickel gold: suitable for lead-free soldering; very flat surface, suitable for SMT, suitable for electrical testing, suitable for switch contact design, suitable for aluminum wire binding, suitable for thick plates, and strong resistance to environmental attacks.

 

 

 

3.Electroplating Nickel Gold

 

Plating nickel gold is divided into “hard gold” and “soft gold”. Hard gold (such as gold-cobalt alloy) is commonly used on gold fingers (contact connection design), and soft gold is pure gold. Electroplating of nickel and gold is widely used on IC substrates (such as PBGA). It is mainly used for bonding gold and copper wires, but the IC substrate is suitable for electroplating. The bonding gold finger area requires additional conductive wires to be electroplated. The advantage of electroplated nickel-gold pcb board proofing is that it is suitable for contact switch design and gold wire binding, and is suitable for electrical testing.

 

4. Nickel Palladium

 

Nickel-Palladium-Gold is now gradually applied in the field of PCB proofing, and it has been used more on semiconductors before. Suitable for bonding of gold and aluminum wires. The advantage of proofing with nickel-palladium-gold pcb board is that it is applied on IC carrier board, suitable for gold wire bonding, aluminum wire bonding, and suitable for lead-free soldering. Compared with ENIG, there is no nickel corrosion (black disk) problem, the cost is cheaper than ENIG and electro-nickel gold, suitable for a variety of surface treatment processes and on-board.

Share

Related posts

2022-05-20

Electromagnetic Compatibility Design of Mobile Phone PCB (1)


Read more
2022-05-20

The PCB Circuit Design of LED Switching Power Supply


Read more
2022-05-20

Electromagnetic Compatibility Design of Mobile Phone PCB (2)


Read more
amazon
amphenol-logo
halliburton
intel logo
samtec logo
sanmina logo
Previous
Next

Company Info

XPCB Limited is a premium PCB & PCBA manufacturer based in China.

We specialize in multilayer flexible circuits, rigid-flex PCB, HDI PCB, and Rogers PCB.

Quick-turn PCB prototyping is our specialty.  Demanding project is our advantage.

Head Office

XPCB Limited
Address :
Building 3, JinFeng Industry Area,  Fuyong Town, Baoan District, Shenzhen, Guangdong, 518103, China.

Tel : +86-136-3163-3671
Fax : +86-755-2301 2705
Email : [email protected]

Quick Links

  • Flexible PCB
  • Rigid Flex PCB
  • ELIC HDI PCB
  • RF PCB
  • PCB Capability
  • PCBA Capabiility
  • About Us

PCB Blog

Electromagnetic Compatibility Design of Mobile Phone PCB (1)

Read More »

The PCB Circuit Design of LED Switching Power Supply

Read More »

Electromagnetic Compatibility Design of Mobile Phone PCB (2)

Read More »

© 2023 - XPCB Limited All Right Reserve