Why You Should Include Tin in Your Finishes Portfolio

Are you looking to expand the surface finishing options you offer clients? Are you prospecting for new clients? When choosing to expand your plating processes what factors come to mind? Cost? Market for process? Robust system? Application? Waste?

Please allow me to introduce to you TECHNIBRITE™ SN 200 bright acid tin plating system! The TECHNIBRITE SN 200 system is a terrific addition to broaden your plating capabilities. The system produces exceptional brightness and leveling while maintaining exceptional solderability.

Why Tin?

Tin plating is used for several key reasons:     

  • Solderability; ease with which a soldered joint can be made to the metal substrate
  • High Conductivity (i.e. low electrical resistivity)
  • Corrosion Protection byisolating the base metal from the environment
  • Economical metal relative to other metals with similar characteristics such as silver, gold or platinum.

Tin is used in many different industries such as aerospace, food services, electronics, automotive, telecommunication, jewelry, as well as FDA-approved processes. Each are focal points and vital for the economic stability of our nation.

Given the wide-ranging and essential use of tin, marketing this versatile finish provides you with opportunity to broaden your client base.


TECHNIBRITE SN 200 works equally well in barrel or rack applications to impart lustrous bright deposits with minimal proprietary chemical components. Bath components are simple and include:

  • Stannous Tin (used in make-up) which provides the desired metal concentration
  • Sulfuric Acid provides conductivity and creates an environment in which the tin anodes can dissolve.
  • TECHNIBRITE SN 200 Make Up provides the proper concentration of wetter, coupler, ductilizers, and low current density brightener.
  • TECHNIBRITE SN 200 Maintenance is a brightener that provides the overall deposit luster, leveling, and brilliance of the deposit.
  • High purity tin anodes are needed to maintain the concentration of tin in the plating bath by electrochemical dissolution of anodes.

Minimal Equipment Requirements

Equipment needed to process tin plating is somewhat minimal when compared to other electroplating processes. Of course, a tank is needed. We recommend PVC-lined (e.g. Koroseal) steel, polyethylene or polypropylene tanks. Filtration is also recommended at one turnover per hour with a 10 – 20 micron filter that is engineered for an acidic environment. Temperature controls need to be in place to keep the temperature around 70 degrees. This usually means only a cooling coil is needed as the process of electrolysis does produce heat. Agitation is needed for solution movement. Barrel agitation is enough for a barrel process and light agitation is required for racks. Cathode rod agitation works extremely well for rack plating.

Furthermore, anodes and anode rails are needed. We recommend the use of tin anodes made of 99.99% tin with titanium hooks. Anode rails should consist of plastic-covered copper rails. The last, but certainly not the least, equipment needed is a rectifier. Ideally, the rectifier would have less than 5% ripple.

Always make sure to consider any restrictions on wastewater discharge. Tin generally presents few issues in wastewater treatment. Each municipality may be different and therefore it is very important to fully evaluate waste treatment issues prior to installing any process.

As always, Asterion stands ready to address any questions to optimize your plating lines. Contact us today.