SMC SOLDER PREFORMS provide a Good quality of solder for each solder joint that is uniform over high volumes. This provides high volume solder assembly operations with increased yield via precise delivery & control of solder to each interconnect.

AVAILABLE ALLOYS :

SMC is manufacturing the solder preforms in a wide range of Low Melting Point alloys ranging from 47℃ to 356℃. These alloys include gold-tin/gold-germanium, pure indium and indium-Tin, Indium-Lead alloys, RoHS compliant Lead-free alloys, and standard tin-lead compositions.

DIMENSIONS / SHAPES :

SMC is manufacturing solder preforms in any size or shape including rectangles, washers, discs, and frames and customized; length/width/diameter: 0.010" and greater, thickness: 0.001" and greater.

FLUXES:

SMC is manufacturing solder fluxes and cleaners for use with solder preforms. Available flux are RA, RMA, No Clean and Water Soluble. Fluxes can be in liquid or paste forms. solder preform can be supplied with flux coating.






Common Recommended Preform & Foil Tolerances

We can manufacture any part to customer specified dimension/tolerance

Squares / Rectangles, Frames, Washers/ ID & OD

  • < 0.050 inches
  • > 0.051 inches
  • > 0.150 inches

Tolerances

  • +/- 0.002 inches
  • +/- 0.0025 inches
  • > +/- 0.005 inches

Thickness

  • 0.0005 inches - 0.001 inches
  • 0.002 inches - 0.005 inches
  • 0.006 inches - 0.020 inches
  • 0.020 inches - 0.040 inches
  • +/- 0.0002 inches
  • +/- 0.0005 inches
  • +/- 0.001 inches
  • +/- 0.002 inches

SMC Solder preforms has wide range of compositions with physical properties suited to specific application requirements. Below is listed a selection of the most commonly used Solder alloys for specific applications. In addition to these alloys, SMC have the various Alloys with melt points ranging from -19°C up to 356°C.

THERMAL INTERFACE / HIGH DUCTILITY MATERIAL

ALLOY COMPOSITION SOLIDUS LIQUIDUS DENSITY DENSITY
WEIGHT % g/cm3 lb/in3
51.51n 32Bi 16.5Sn 60 140 60 140 8.2 0.2958
521n 48Sn 118 244 118 244 7.3 0.2635
971n 3Ag 146 295 146 295 7.38 0.2664
1001n 156.6 313 156.6 313 7.31 0.2639
1001n+* 156.6 313 156.6 313 7.31 0.2639