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PCB Gold Finger 30µ” Hard Gold Plating

Original price was: $20.00.Current price is: $19.90.

PCB Gold Fingers with 30µ” (microinches) of Hard Gold Plating are a common feature in printed circuit board manufacturing, particularly for edge connectors. Here’s some information about this specification:

  1. Gold Fingers: These are the exposed metal contacts at the edge of a PCB that plug into a connector or slot. They’re called “fingers” due to their appearance.

  2. Hard Gold Plating: This refers to the process of depositing a thin layer of gold onto the copper contacts. “Hard gold” is an alloy of gold (typically 99.7% pure) with small amounts of hardening elements like nickel or cobalt.

  3. Thickness: 30µ” (30 microinches) is the thickness of the gold layer. This is equivalent to approximately 0.762 micrometers (µm).

  4. Benefits of Hard Gold Plating:

    • Excellent conductivity
    • High wear resistance
    • Corrosion protection
    • Low contact resistance
    • Long shelf life
  5. Applications: This type of plating is commonly used in:

    • Computer motherboards
    • Expansion cards
    • Memory modules
    • Other high-reliability electronic components
  6. Standards: This plating often meets IPC (Association Connecting Electronics Industries) standards for electronic assemblies.

  7. Cost: Gold plating adds to the cost of PCB manufacturing due to the precious metal content, but it’s often necessary for ensuring reliability in critical connections.

  8. Alternative thicknesses: While 30µ” is common, other thicknesses (like 10µ”, 20µ”, or 50µ”) may be used depending on the application requirements.

This specification indicates a high-quality, durable finish suitable for applications requiring repeated insertions and high reliability.