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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
ProductOvenTorchMelting RangeAlloyFluxCharacteristics
LPS-281-851XX281°F42%Sn / 58%BiStrongRestricive - Lead Free
WCC-281-801XX281°F42%Sn / 58%BiStrongSemi-Restricive - Lead Free
WC-360-830XX361-374°F60%Sn / 40%PbIntermediateRestrictive
SSR-360-851XX361-374°F60%Sn / 40%PbStrongFree Flowing - Works with SS
PMS-360F-802 X361-374°F60%Sn / 40%PbIntermediateVery Restictive
MBC-360-880XX361-374°F60%Sn / 40%PbRosinNon-Corrosive
WC-450-806XX361-421°F50%Sn / 50%PbIntermediateRestictive
PMS-430-800 X430°F96.5%Sn / 3.5%AgIntermediateRestictive - Lead Free
MBC-430-801XX430°F96.5%Sn / 3.5%AgRosinNon-Corrosive - Lead Free
WCC-430-801XX430°F96.5%Sn / 3.5%AgStrongSemi-Restictive - Lead Free
SSE-500-851XX449°F100%SnStrongLead Free
ASN-845-650XX718-845°F85%Zn / 15% AlIntermediateNon-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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