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Tin Lead Solder Paste Sn60Pb40 60 40


Tin Lead Solder Paste Sn60Pb40 60 40

Tin Lead Solder Paste (2)

Tin Lead Solder Paste Sn60Pb40, comprised of 60% tin (Sn) and 40% lead (Pb), is a widely used soldering material in many applications. It is known as solder paste 60 40 too. This solder paste simplifies soldering processes while ensuring strong connections in various applications.


Sn60Pb40 solder paste is made of solder powder, flux, and binder. It plays a pivotal role in surface mount technology (SMT) and electronics assembly, enabling reliable solder connections.


Specifications of Tin Lead Solder Paste Sn60Pb40 60 40

Alloy Composition

60% Tin (Sn), 40% Lead (Pb)

Melting Point


Flux Type

Rosin based flux

Powder Size

Type 3 (25-45μm), Type 4 (20-38μm)

Shelf Life

Recommended 6months




XF Solder or OEM service

*We also produce the solder paste in syringe.

Solder Paste Sn60Pb40 60 40

Packing In Jars

Solder Paste in Syringe

Packing In Syringe


Features of Tin Lead Solder Paste Sn60Pb40 60 40

Lower Melting Point

Sn60Pb40 solder paste typically has at 183°C to 190℃. It requires much lower heat than most other leaded solder paste alloy to work with. This characteristic makes it ideal for reflow soldering processes.

Good Wetting Property

Solder paste 60 40 has excellent wetting properties, which means it can readily flow and bond with a variety of metal surfaces. It is compatible with a wide range of surface mount components, such as resistors, capacitors, integrated   circuits (ICs), and more.

Reliable Solder Joints

When properly applied, it creates strong solder joints with good electrical and   thermal conductivity. This is crucial for the performance and longevity of electronic components and circuits. Also, it can provide reliable solder joints with good mechanical strength, making it suitable for many electronic applications.

Good Viscosity

Sn60Pb40 solder paste is formulated to have a suitable viscosity for stencil printing during the soldering process. The viscosity can be adjusted by manufacturers to meet the requirements of different printing methods and equipment.



Applications of Tin Lead Solder Paste Sn60Pb40 60 40:

Solder paste 60 40 has been widely used in SMT assembly, creating dependable connections between components and PCBs. It's suitable for assembly of high precision soldering projects that use small IC components. We commonly see it in the manufacturing of consumer electronics and industrial electronics such as televisions, audio equipment, telecommunication devices etc.

Automatic Printing with Solder Paste

Automatic Printing with Solder Paste

SMT Printing with solder paste

Manual Printing with Solder Paste

Jet printing with solder paste

Jet Printing with Solder Paste

How to Use Tin Lead Solder Paste Sn60Pb40 60 40?

  1. Clean the PCB or soldering area properly to prepare it for putting solder paste on.

  2. Place the stencil over the PCB, aligning it with the component footprints.

  3. Apply proper amount of solder paste to the stencil by using a squeegee or automatic printing machine to spread the solder paste evenly across the stencil, filling the openings corresponding to the component pads.

  4. Place SMD components on the PCB, aligning their pads with the solder paste.

  5. Transfer the PCB with components into a reflow oven or appropriate soldering equipment.

Follow the recommended reflow profile to conduct the soldering process. This profile specifies the time and temperature settings for the solder paste to melt, reflow, and solidify.


Instruction on Storage and Using of Tin Lead Solder Paste Sn60Pb40 60 40:

It is recommended to store at 2°C to 10°C to prevent paste drying or degradation.


It's recommended to get the solder paste out of refrigerator 3 to 6 hours prior to using to get the paste come to the room temperature. Well mix the paste using a mixer machine or doing it manually by using spatula.


Un-finished solder paste must be well seal up again in the airtight jars to prevent contamination and moisture absorption, and put back into the refrigerator. 


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