国产国产人在线成免费视频

    <var id="tbxrt"><ins id="tbxrt"></ins></var>

        <big id="tbxrt"><listing id="tbxrt"></listing></big>
          <span id="tbxrt"><menuitem id="tbxrt"><dfn id="tbxrt"></dfn></menuitem></span>

          Shenzhen Grande Electronic Linkedin Page
          Shenzhen Grande Electronic Co., Ltd logo
          E-mail us for a Quote:
          sales88@greattong.com
          Call us now:
          +86-755-83261869

          Technical Article


          What is the purpose of gold in circuit boards?

          Time:2019-09-30 13:49:13 Click:

          Well, the purpose of gold is actually refers to the characteristics of gold:

           

          1. Extremely strong resistance to oxidation;

          2. Excellent conductivity.

           

          BTW, the difference between hard gold, soft gold and flash gold on the circuit board, which lies in the composition of the layer of gold that is finally plated.

           

          Soft Gold: Pickling → Electroplating Nickel → Electroplating Pure Gold

          Hard Gold: Pickling → Electroplating Nickel → Pre-Gold Plating → Electroplating Gold Nickel or Gold Alloy

          Flash Gold: Fast Gold Plating. In fact, it is a procedure of “pre-gold plating” for electroplating hard gold, which uses a relatively large current and a thin solution containing gold. The first layer in the nickel layer is denser, then a pretty thin layer of gold is used for subsequent electroplating of gold-nickel or gold-cobalt alloys.

                    

           

           

           


          Previous:FPC Introduction

          Next:How should we inspect incoming materials in PCBA?


          Request an Official Quote

          Questions

          E-MAIL

          File Upload

          Upload a list of files

            Please upload your Gerber files and BOM. You can upload an unlimited number of files as long as the total size of all files does not exceed 20 MB. To ensure you receive your official quote in less than 24 hours, please include the quantity of circuit boards for which you would like a quote.

            If you require that we sign a Non-Disclosure Agreement (NDA), please send it to us prior to sending your files and we will be happy to accommodate.

             
            Home About Us Services Quality Pb-Free News Contact Us


            Copyright ® 2017,Shenzhen Grande Electronic Co., Ltd. All Rights Reserved. 中文站 Sitemap

            国产国产人在线成免费视频

              <var id="tbxrt"><ins id="tbxrt"></ins></var>

                  <big id="tbxrt"><listing id="tbxrt"></listing></big>
                    <span id="tbxrt"><menuitem id="tbxrt"><dfn id="tbxrt"></dfn></menuitem></span>