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Soft Solder Paste

Solder paste is an alloy or pure metal which, when heated, liquefies and melts to flow onto the space between two close fitting parts, creating a soldered joint. 
Solder paste has suitable melting and flow properties to permit distribution by capillary attraction in properly prepared joints. 
Solder pastes produce joints that meet service requirements, such as strength and corrosion resistance. 
 
These low temperature flux-binder systems are intended for soldering applications under 450°C / 840°F. 
 
Suitable heating methods include torch, induction, resistance, infrared, hot plate or oven, and clean-up is easily accomplished with a hot water rinse. 
 
We have many soft solder paste alloys available with different flux combinations from Fusion Inc.
 
Soft Solder Paste Alloys
Product Oven Torch Melting Range Alloy Flux Characteristics
LPS-281-851 X X 281°F 42%Sn / 58%Bi Strong Restricive - Lead Free
WCC-281-801 X X 281°F 42%Sn / 58%Bi Strong Semi-Restricive - Lead Free
WC-360-830 X X 361-374°F 60%Sn / 40%Pb Intermediate Restrictive
SSR-360-851 X X 361-374°F 60%Sn / 40%Pb Strong Free Flowing - Works with SS
PMS-360F-802   X 361-374°F 60%Sn / 40%Pb Intermediate Very Restictive
MBC-360-880 X X 361-374°F 60%Sn / 40%Pb Rosin Non-Corrosive
WC-450-806 X X 361-421°F 50%Sn / 50%Pb Intermediate Restictive
PMS-430-800   X 430°F 96.5%Sn / 3.5%Ag Intermediate Restictive - Lead Free
MBC-430-801 X X 430°F 96.5%Sn / 3.5%Ag Rosin Non-Corrosive - Lead Free
WCC-430-801 X X 430°F 96.5%Sn / 3.5%Ag Strong Semi-Restictive - Lead Free
SSE-500-851 X X 449°F 100%Sn Strong Lead Free
ASN-845-650 X X 718-845°F 85%Zn / 15% Al Intermediate Non-Corrosive - For Aluminum Only

Soft Solder Paste

  1. Part No:SSAL26-181-75J
    $60.00
    Solders directly to aluminum for aluminum to copper and aluminum to aluminum connections
  2. Part No:SSAL26-181-75S
    $16.00
    Solders directly to aluminum for aluminum to copper and aluminum to aluminum connections
  3. Part No:PSSPMS430
    This is a very restrictive paste containing 96.50%Sn 3.5%Ag.
  4. Part No:PSSMBC430
    $7.96
    This is a restrictive paste containing 96.50%Sn 3.5%Ag.
  5. Part No:PSSPMS360
    $7.00
    This is a very restrictive paste containing 60%Sn 40%Pb.

    It melts at 361-374

  6. Part No:PSSE500
    This is a Free Flowing paste containing 100%Sn.
  7. Part No:PSSSR360
    This is a Free Flowing paste containing 60%Sn 40%Pb.
  8. Part No:PSSSR300
    This is a Free Flowing paste containing 43%Sn 43%Pb 14%Bi.
  9. Part No:PSSWC450
    This is a restrictive paste containing 50%Sn 50%Pb. It melts at 361-421 F.
  10. Part No:PSSMBC360
    This is a restrictive paste containing 60%Sn 40%Pb.
  11. Part No:PSSWC360
    This is a restrictive paste containing 60%Sn 40%Pb.
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