Solder

Solder

The most common electrical connections are solder joints. Solder can also be used to install various sensors to improve thermal heat sinking. Common solders are indium solder and 90/10 Pb/Sn. Indium solder is used for various applications including sensor installation to provide excellent thermal contact with the sample. 90/10 Pb/Sn solder is used for applications requiring a higher temperature (liquidus point of 575 K and solidus point 458 K). Ostalloy® 158 solder is used as a seal for demountable vacuum cans and electric feedthroughs in cryogenic systems. Solder product overview...


Indium foil/solder

  • Foil form
  • Exceptional pressure seal
  • Extremely malleable
  • 99.99% pure
  • Acts as a metallic seal against corrosion
  • Flexible sensor mouting material for low stress at cryogenic temperatures

Note: Indium foil becomes a superconductor at 3.37 K (-270 °C), below which the thermal conductivity decreases.

High temperature solder

  • 90% Pb, 10% Sn
  • Good for connecting hardware
  • Solidifies quickly

Ostalloy® 158 solder

  • Does not shrink, but exhibits expansion upon solidification
  • Low melting temperature 343 K (70 °C), requiring only a simple melting pot and a gas or electric heat source
  • Reusable many times
  • Oxide separated easily in hot water
  • Solidifies quickly
  • Creates almost no dross because of its low melting temperature

Solder sleeves

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