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Resistance Welding Electrodes

AMADA WELD TECH provides a variety of electrodes for resistance welding applications. The electrodes described on this page fit perfectly with the needs identified when using MIYACHI PECO products.



The selection of the right electrode influences the quality of the weld joint and uniformity in series production. The stability of the electrode under heat is crucial to the cost of series production. AMADA WELD TECH offers a full range of electrodes according to the welding material


Unibond® Electrodes

Unibond electrodes are used for parallel gap bonding and reflow soldering. Generally, RWMA2 copper Unibond electrodes are used with resistive and/or hard materials such as gold-plated kovar and nickel. Molybdenum Unibond electrodes are used for bonding conductive or soft materials such as copper or gold.

The face of a Unibond electrode measures 0.020 inches (0.5 mm) wide by 0.030 inches (0.75 mm) deep. In unfixtured applications, this limits their use to bonding ribbons (wire) which are at least 0.010 inches (0.25 mm) wide because of the limited visibility.

Unitip® Electrodes

Unitips are electrodes for parallel gap bonding of gold plated kovar, copper, or gold ribbons (wires) which are smaller than 0.010 inches (0.25 mm). They are made from two pieces of molybdenum or tungsten, which are permanently bonded to an insulating spacer. This fixed gap and bonded construction results in a tip that wears uniformly when properly dressed. The length of the Unitip and the flat area on the front allows it to bond ribbons extremely closely to the walls of packages as deep as 0.450 inches (11.5 mm). The narrower Thinline “L” series Unitips have a tapered profile, enabling them to be used closer to the corners of packages.

Welding Electrodes

MacGregor offers a comprehensive line of standard and custom electrodes for most micro-welding applications. A wide variety of welding electrode shapes and materials are available that are suitable for use in all standard equipment models and brands. A full range of conventional welding materials are available.

It is imperative to perform regular electrode maintenance to ensure that the quality and characteristics of the connection remain stable and constant. MacGregor Welding Systems provides several easy-to-use Electrode Maintenance Tools that ensure the electrode cleaning and setup is quickly and effectively accomplished with minimum down-time.

Electrode primary material types:

  • RWMA-02 Copper-Chromium
  • RWMA-03 Copper-Cobalt-Beryllium
  • RWMA-11 Copper-Tungsten
  • RWMA-13 Tungsten
  • Molybdenum
  • Glidcop® : Aluminium Dispersion Strengthened Copper

Customized Solutions

Send your sample to one of our technology centers in Europe for an evaluation. We will then determine which solution meets your needs best. AMADA WELD TECH offers feasibility testing and application consulting.