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WIRE BONDABLE LEAD FRAME MATERIALS FOR AUTOMOTIVE ELECTRONICS


Automotive electronic circuitry and sensors require materials that that can withstand high power environments to ensure reliability. While many of the metal structures within the circuit, known as lead frames, are created using plated metals, cladding offers a more durable, high performing solution. Materion’s lead frame clad materials incorporate stable wire bondable surfaces and conductive terminal alloys for signal and power management. Produced in reel-to-reel processes, our semi-finished lead frame materials enable large volume manufacturing of high reliability electronic packaging materials.

ALUMINUM INLAY CLAD FOR ULTRA-STABLE BONDING

Wire bonding forms the connection between microelectronic circuitry and the macro-scale wiring systems of passenger cars. In these applications where reliability and high-power linkages are critical to a control module, bonding aluminum wire to aluminum pads offers the highest processing yields. Integrating the aluminum pad directly into the lead frame via inlay cladding is the ideal process for safety critical applications, such as Electronic Power Steering Modules and Anti-Lock Brake Systems.

Aluminum inlay benefits:

  • Superior reliability
  • High temperature and vibration stability
  • Extended shelf life
  • Large wire bonding process windows and high yields
  • Flexible design criteria for terminal-to-connector mating
  • Consistent thickness and hardness
  • Material softening resistance of 250°C minimum
  • Non-toxic and lead-free materials
  • Designed for manufacturability 

ELECTROPLATED ALTERNATIVES

We also offer a variety of electroplated lead frame designs, which offer a cost-efficient solution for many electronic modules and sensors. Electroplated nickel-phosphorous, for example, is available as overall or selective stripe plating and is commonly combined with other electroplated materials such as selective tin or silver for contact terminals.

Contact our engineers to learn more about aluminum inlay cladding and other lead frame material solutions for your automotive application.