Sn42Bi57Ag1 Solder Powder / Tin Powder

Sn42Bi57Ag1 Solder Powder / Tin Powder
Sn42Bi57Ag1 solder powder is designed for solder paste production, SMT assembly, electronic packaging, and precision soldering applications. The powder can be supplied with different particle size grades according to printing, dispensing, or process requirements.
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Sn42Bi57Ag1 Solder Powder / Tin Powder

A low-temperature tin-bismuth-silver solder powder for heat-sensitive assembly, step soldering and precision solder paste formulation.

Sn42Bi57Ag1Tin-Bismuth-Silver
139°CMelting point
Type 3 · 4 · 5Particle size grades
Sn42Bi57Ag1 Solder Powder / Tin Powder
Sn42Bi57Ag1 Solder Powder / Tin Powder

Low-temperature Sn-Bi-Ag powder for sensitive electronic processes

With a 139°C melting point, this alloy powder supports low-temperature paste development where thermal exposure, warpage risk or staged soldering must be carefully managed.

01

Selectable Particle Grades

Available in Type 3, 4, 5 for suitable printing, dispensing and paste formulation requirements.

02

Stable Alloy Composition

Controlled alloy composition supports consistent melting behavior and repeatable material formulation.

03

139°C low-temperature alloy

Supports lower-temperature processing for suitable components, substrates and staged assembly sequences.

04

Low Alpha Option

Selected low alpha or ultra-low alpha supply can be discussed; availability must be confirmed for the chosen alloy and particle grade.

05

Export Packaging

Standard supply is 5 kg per bag and 4 bags per box for practical storage and international shipment.

06

Custom Supply Support

Particle grade, alpha level, packaging and application requirements can be reviewed before quotation and sample evaluation.

Product Specifications

Core alloy, melting point, particle size and packaging information for engineering review and quotation.

Recommended Use

Recommended for low-temperature solder paste, heat-sensitive modules, step soldering, repair and precision electronic assembly after process validation.

Product Name
Sn42Bi57Ag1 Solder Powder / Tin Powder
Alloy Model
Sn42Bi57Ag1
Alloy Family
Tin-Bismuth-Silver
Melting Point
139°C
Particle Size
Type 3 / 4 / 5
Low Alpha Option
Selected low alpha <0.01 cph/cm² or ultra-low alpha <0.002 cph/cm² options; confirm availability
Packaging
5 kg per bag; 4 bags per box; standard box size 18.5 × 18.5 × 18.5 cm
Typical Applications
Heat-Sensitive Modules, Low-Temperature SMT, Step Soldering, Precision Rework

Typical Applications

Final suitability should be confirmed against paste formulation, substrate finish, stencil design, deposition method, reflow profile and reliability requirements.

Application 01Heat-Sensitive Modules
Application 02Low-Temperature SMT
Application 03Step Soldering
Application 04Precision Rework
View the complete solder powder / tin powder series →

Need Sn42Bi57Ag1 solder powder for your formulation?

Contact Jufeng Solder for particle size confirmation, low alpha options, sample evaluation, packaging and quotation support.

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