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
Bridging
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.
