Our Gold Plating Solution

General Information

NB SEMIPLATE AU 100 AS (= former NB SEMIPLATE AU 100) is an alkaline, non-cyanide electroplating formulation which produces a bright, ductile deposit and has the following characteristics:

  • very stable bath, sulfite based
  • very uniform thickness
  • shiny surface, arsenite grain refiner
  • low temperature plating

NB SEMIPLATE AU 100 AS is a ready-to-use product. It is not necessary to add other materials for the initially start of the application. Over time, it may be necessary depending on the electrolyte and application to add additives (see data sheet).

In comparison with other gold plating processes, the NB SEMIPLATE AU 100 AS electrolyte demonstrates exceptional throwing power that results in good coverage of recesses, holes and hollows of parts of complex geometry.

Deposits from the NB SEMIPLATE AU 100 AS process also exhibit the unique ability to build brightness with increasing thickness. Specific gravity measurements of the deposit consistently show values of 19.1 which indicate freedom of codeposited polymers generally found in deposits from other systems of similar purity. NB SEMIPLATE AU 100 AS deposits have main applications in MEMS processing.

Physical properties of the Au layer

  • Physical Properties of the Deposit
  • Purity 99.9% Hardness 130 to 190 mHV0,020
  • Contact Resistance 0.3 mW (measured by cross-wire method with 200 gram load
  • Deposit weight for 2.5 microns 31.6 mg/in 2 (4.9 mg/cm2) (100 micro inches)

Application Example

Electroplating projects realized with our electrolytes:
> MicroSwitch

> Wire Connection of Polyimide Foil

Technical Data Sheet:

For further information please refer to the technical data sheet:
> NB Semiplate Au 100 (TDS)


Lithography Application Notes

Our list of application notes with litho-related theoretical and technical background on all stages of micro-structuring can be downloaded from here:
> application notes

Individual Technical Support and Price Request

Available Sales Units:

  • 1 L and 5 L bottles

Compatible :

  • Purity Grades: VLSI/ ULSI or MEMS
  • Photoresists: (AZ-)Resist compatible

If you are interested in products for the maintenance of the electrolyte solution and preparation, then please send us your inquiry.
For any further technical discussions around the application of our plating solutions in your running or scheduled plating processes, or your price and lead time request, please contact us via:

e-mail: sales(at)microchemicals.com
phone: +49 (0)731 36080 409
fax: +49 (0)731 36080 908

Thank you for your interest!

Source: nb technologies