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Finish

 

Electroless Nickel/Immersion Gold (99.9% Gold)

 

  • Typical thickness: 0.1µ Gold over 5µ Nickel
  • Excellent corrosion resistance
  • Excellent for fine-pitch technology
  • Excellent solderability
  • Good for Aluminium wire bonding
  • Excellent shelf life


    HAL (Eutectic 63% Tin - 37% Lead)

  • Typical coating thickness: 2-50µ, design dependent.
  • Excellent solderability
  • 0.63mm Pitch capability
  • 0.8mm minimum board thickness capability
  • Good shelf life



    Reflowed Tin/lead

  • Typical coating thickness: 8-15µ, after reflow.
  • Excellent corrosion resistance
  • Excellent solderability
  • Qualified for SPACE
  • Excellent shelf life



    Nickel - Hard Gold

  • Typical thickness: 1.5µ Gold (99.7%) over 5µ Nickel
  • Excellent corrosion resistance
  • 130 to 220 Knoop harness
  • Excellent wear resistance, best for surface rotary switches, on-off contacts, and edge connectors
  • Excellent shelf life



    Nickel - Soft Gold

  • Typical thickness: 2-4µ Gold (99.9%) over 5µ Nickel
  • Excellent corrosion resistance
  • Less than 90 Knoop hardness
  • Good for pressure contacts and Aluminium or Gold-wire bonding
  • Fair wear resistance



    Organic Solderability Preservative (OSP)

  • Typical coating thickness: 0.2µ to 0.5µ
  • Excellent solderability
  • Excellent surface coplanarity and hole size uniformity
  • Excellent for use in Fine-pitch technology
  • Improved surface contrast - assembly vision capability
  • Board not subjected to thermal shock (as with HAL)
  • Good shelf life (12 months)



    Edge Connector Plating

    The preferred manufacturing process for gold plating of edge connectors is Tab Plating. This process does not require the extra labour and materials associated with double image plating. The maximum length of the gold plated tab is 30mm. The annular ring of a through hole must be a minimum of 2mm from the edge of the gold plated area to prevent black holes", resulting in solderability problems.

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    Note: The Tab Plate process is not set up for through hole plating. It is a surface plating process. But when used on top of immersion Ni/Au, it is possible to plate hard-gold in holes.

    Selective Plating

    It is possible to plate areas separately, with extra copper. Typically it is used for selective via plating and raised SMD pads. Contact GPV for further advise.

     

     


    GPV PCB Division - Egebjergvej 128 - DK-8700 Horsens - (+45) 72 19 20 00 - info@gpv-pcb.com