Solder Pastes

Solder paste is a type of solder used when manufacturing PCBs to connect surface mount components to pads on the board. The paste is a mixture of small solder spheres with flux.
The paste initially adheres components in place because of its stickiness. You then use heat to melt the paste to form a mechanical bond and an electrical connection.
Solder paste is applied to the board by stencil printing and the components are put in place by a pick and place machine or by hand.
Why use a solder paste?
Defects in circuit-board assembly are caused due to issues in the solder-paste printing process or due to defects in the solder paste. This can give short circuits, incomplete circuits, and head on pillow defects.
How to use Solder paste
• Remove oil, grease, polishing compound and any excessive oxides from the joint. Make sure that the joint is smooth, flat and free from any burs.
• Apply the solder paste to the top joint. The paste will not fill large gaps so make sure that the pieces to be soldered actually touch.
• Apply heat to the piece away from the joint, keep the heat source moving too prevent overheating the paste.
• Once the paste flows remove the heat source

Typical Applications
Solder pastes are used in mass production of PCBs and prototype PCB assembly.

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Description Price Lead Free Trade Name Package Type Package Size
RS Stock No. 146-6198
Mfr. Part No.SMD4300SNL10
BrandCHIPQUIK
PHP1,578.96
Each
units
Yes - Syringe 35g
RS Stock No. 146-6200
Mfr. Part No.SMDLTLFP10T5
BrandCHIPQUIK
PHP2,036.94
Each
units
Yes - Syringe 35g
RS Stock No. 146-6196
Mfr. Part No.SMD291SNL50T3
BrandCHIPQUIK
PHP1,094.46
Each
units
Yes - Jar 50g
RS Stock No. 146-6199
Mfr. Part No.SMDLTLFP
BrandCHIPQUIK
PHP1,035.00
Each
units
Yes - Syringe 15g
RS Stock No. 146-6194
Mfr. Part No.SMD291SNL10T5
BrandCHIPQUIK
PHP2,302.14
Each
units
Yes - Syringe 35g
RS Stock No. 146-6191
Mfr. Part No.SMD291AX50T3
BrandCHIPQUIK
PHP829.26
Each
units
- - Jar 50g
RS Stock No. 146-6193
Mfr. Part No.SMD291SNL10
BrandCHIPQUIK
PHP1,483.08
Each
units
Yes - Syringe 35g
RS Stock No. 146-6197
Mfr. Part No.SMD4300AX10
BrandCHIPQUIK
PHP1,331.00
Each
units
- - Syringe 35g
RS Stock No. 146-6202
Mfr. Part No.SMDLTLFP50T3
BrandCHIPQUIK
PHP1,320.90
Each
units
Yes - Jar 50g
RS Stock No. 146-6190
Mfr. Part No.SMD291AX250T3
BrandCHIPQUIK
PHP2,509.20
Each
units
- - Jar 250g
RS Stock No. 146-6187
Mfr. Part No.SMD291AX
BrandCHIPQUIK
PHP883.32
Each
units
- - Syringe 15g
RS Stock No. 146-6195
Mfr. Part No.SMD291SNL250T3
BrandCHIPQUIK
PHP3,238.00
Each
units
Yes - Jar 250g
RS Stock No. 146-6201
Mfr. Part No.SMDLTLFP250T3
BrandCHIPQUIK
PHP4,069.00
Each
units
Yes - Jar 250g
RS Stock No. 146-6192
Mfr. Part No.SMD291SNL
BrandCHIPQUIK
PHP943.50
Each
units
Yes - Syringe 15g
RS Stock No. 146-6189
Mfr. Part No.SMD291AX10T5
BrandCHIPQUIK
PHP1,813.00
Each
units
- - Syringe 35g
RS Stock No. 146-6188
Mfr. Part No.SMD291AX10
BrandCHIPQUIK
PHP1,245.42
Each
units
- - Syringe 35g