About SN100C

A lead-free solder with established
various track records and reliability

About SN100C

SN100C is a lead-free solder alloy developed by NIHON SUPERIOR.
The composition of the alloy is Sn (tin)-Cu (copper)-Ni (nickel)-Ge (germanium).
It does not contain silver, which greatly contributes to lower cost of materials.
The basic composition of the alloy, Sn-Cu-Ni, is registered in the international standard ISO.

Alloy Properties

From the refinement of the intermetalic compound from the microaddition of Ni and the antioxidation effect of Ge, the features of SN100C are :

Problems faced by conventional lead-free solders (e.g. Sn-3.0Ag-0.5Cu)

SN100C can solve the problems

  • Icicles and bridges

    Immediately after withdrawal

    After solidification


    Excellent Fluidity

    Immediately after withdrawal

    After solidification

    No bridging

    Ni + Ge delivers high fluidity ensuring minimal shorts and icicles.

  • Insufficient Wetting

    Defective fillet

    Excellent wettability

    Excellent fillet

    Excellent wetting shortens total wetting time and forms excellent fillets.

  • Shirinkage and cracks

    Whole Surface

    Magnified Cross-Section

    Less shrinkage

    Whole Surface

    Magnified Cross-Section

    The Ni effect inhibits the shrinkage and forms smooth fillets.

  • Copper erosion

    Through hole (erodes copper)

    Reduced copper erosion

    Through hole (no copper erosion)

    Erodes copper more slowly with its Ni barier effect.

  • IMC growth

    Part of the IMC grew

    Stable IMC

    The grain size of the IMC is uniform

    SN100C forms a stable intermetallic compound layer at the solder copper interface.

Adoption Results

The cumulative number of products using SN100C for joining electronic components has reached more than 2.4 billion units. This extensive track record is proof of SN100C's reliability.

SN100C Adoption Case

SN100C is used in a wide range of products, from white goods to automotive components, mobile devices, and semiconductors.

Examples of adopted applications
  • Air conditioner
  • Refrigerator
  • Microwave Oven
  • IH rice cooker
  • Washing machine
  • Vacuum cleaner
  • Light bulbs
  • LED lighting
  • Video
  • DVD Recorder
  • Projector
  • Audio
  • Speakers
  • Electronic musical instruments
  • Telephones
  • Personal Computers
  • Printers
  • DVD drives
  • Car audio
  • In-vehicle sensors
  • Engine Ignition System
  • AC adapters
  • Cell phone chargers
  • Battery chargers
  • Power modules
  • Inverter power supplies
  • High Frequency Components
  • Digital cameras
  • Copy machines
  • FAX machines
  • Vending machines
  • ATMs
  • Many others.
  • Power Supply Equipment

  • Lighting equipment

  • OA/AV equipment

  • White goods

  • Portable devices

  • In-vehicle parts

  • Substrate Leveler

  • Semiconductors

  • Digital cameras

  • Copy machines