World's Fastest PCB Manufacturing
My Message
Suggestions
Account

Get started now

Log In

or

Sign Up

My ALLPCB

My Orders Shipping Address Balance Account Settings My SNS Profile
0
  • Home
  • Instant Online Quote Alternate Text
    • PCB Instant Quote
    • PCB Assembly Quote
    • SMD-Stencil Quote
  • PCB Assembly
  • PCB Capabilities
  • Feedback
  • Resources
    • Sponsorship
    • PCB Softwares
    • Units Conversion
    • FAQ
  • About Us
    • About Us
    • Why Us
    • Contact Us
    • News
Log In Sign Up
  • Home
  • Instant Online Quote
    • PCB Instant Quote
    • PCB Assembly Quote
    • SMD-Stencil Quote
  • PCB Assembly
  • PCB Capabilities
  • Feedback
  • Resources
    • Sponsorship
    • PCB Softwares
    • Units Conversion
    • FAQ
  • About Us
    • About Us
    • Why Us
    • Contact Us
    • News
service@ALLPCB.com
Thank you very much for your valuable suggestion!
We will solve it as soon as possible!

PCB surface treatment: Immersion Tin

2017/2/19 4:31:29

According to IPC, the association Connecting Electronics industry, Immersion Tin is a metallic finish deposited by a chemical displacement reaction that is applied directly over the basis metal of the printed circuit boards, that is, copper. The technology of Immersion Tin protects the underlying copper from oxidation over its intended shelf life.
Copper and tin, however, has a strong affinity for each other, which will inevitably spread a metal to another metal inside. This will directly affect the shelf life of deposit and the performance of finish.
Advantages include:
  1. Smooth surface
  2. Do not contain lead(Pb)
  3. Can be re-workable
Disadvantages include:
  1. Handling damage easily
  2. Process use a kind of carcinogenic substance (thiourea)
  3. Tin exposed outside may be corroded in final pcb assembly
  4. Tin whiskers
  5. Unsuitable for multiple reflow soldering and assembly
  6. Thickness is difficult to be measured
  • 1723
  • 1
  • 191
Post Comment

    M.?Aznar

    2017/2/21 4:31:29

    Helpful!

    You might like

    Carter

    • Threads

      11

    • Following

      0

    • Followers

      0

    PCB Prototype

    PCB Instant Quote

    x mm

    Quantity

    Quote Now

    PCB Assembly

    SMT-Stencil

    • 12
    Products & Service
    PCB Capabilities
    Aluminum PCB Service
    PCB Assembly Service
    SMT-Stencil
    Quotation & Feedback
    Online Auto-Quotation
    PCB Assembly Quote
    Quote by Salesperson
    Customer Reviews
    Customer Support
    FAQ
    Community
    Sponsorship
    Referral Program
    About Us
    About Us
    Why Us
    Contact Us
    News
    Resource Details
    PCB Software
    Units Conversion
    service@allpcb.com central_support@allpcb.com
    Follow Us:
    Facebook Youtube Twitter Tumblr Youtube
    Certification: Certification
    Our Preferred Partners: Our Preferred Partners

    Please send Gerbers to service@ALLPCB.com for quotation © ALLPCB.com,All Rights Reserved Privacy PolicySitemap

    Secure Site by GoDaddy.com This site has earned the McAfee SECURE certification.