I'm looking for low temperature soldering paste that doesn't come in a wheel of filament. It seems tin and bismuth soldering pastes have a melting point of around 160 degrees Celsius.

Are there any formulations, or products on the market, for an even lower temperature soldering paste? I guess this company makes them, but I'm wondering if there is a formulation with a stronger market presence.

I need a conductivity strong enough to use ICs.

  • \$\begingroup\$ For what purpose? \$\endgroup\$ – DKNguyen Nov 20 '19 at 16:37
  • \$\begingroup\$ Building a makeshift reflow oven and pick-and-place machine for prototyping inside a cardboard box. Some materials used in creating it have a plastic deformation temperature around 105 degrees celsius \$\endgroup\$ – nick carraway Nov 20 '19 at 16:38
  • 3
    \$\begingroup\$ never thought id read that sentence ^^ lol \$\endgroup\$ – efox29 Nov 20 '19 at 16:39
  • \$\begingroup\$ It's the age of plastics, yo!! -- mick jagger \$\endgroup\$ – nick carraway Nov 20 '19 at 16:40
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    \$\begingroup\$ You want to reflow solder in a cardboard box? For fun? I can’t imagine why? :) \$\endgroup\$ – Jakob Halskov Nov 20 '19 at 16:40

There are chip removal alloys (lead-free) that melt around 79-91°C.

As well as being expensive, they're probably brittle and perhaps nasty in other ways.

Leaded alloys are available that melt at ~58°C, a bit less than what you are asking for.

As far as I know, those alloys are not available in paste form, however. What the industry calls "Low Temperature Soldering" is more like peak 190°C (lead-free process).

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