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A small reel to start with

AIYHSW Lead-free solder wire Sn99.3 Cu0.7, 0.8 mm, 20 g, rosin core

A 20 g reel of lead-free solder wire from AIYHSW in Sn99.3 Cu0.7, 0.8 mm thick, with a no-clean rosin core and a stated melting point of 227 °C, for cable, circuit board and small electronics repair.

AIYHSW reel labelled Sn99.3 Cu0.7, flux 2.0 %, lead-free, WT 20 g, DIA 0.8 mm

AIYHSW Lead-free solder wire Sn99.3 Cu0.7, 0.8 mm, 20 g, rosin core

A 20 g reel of lead-free solder wire from AIYHSW in Sn99.3 Cu0.7, 0.8 mm thick, with a no-clean rosin core and a stated melting point of 227 °C, for cable, circuit board and small electronics repair.

Alloy
Sn99.3 Cu0.7, lead-free, title and first bullet
Melting point
227 °C, third bullet
Diameter
0.8 mm, title and first bullet
Flux type and percentage
Rosin core, no-clean formula, second bullet; the reel label in the product photograph reads FLUX 2.0 %
Net weight
20 g, title and first bullet
Handling guidance
Absent from the listing — “no toxic gas” and “no odour” are the seller’s wording, fourth bullet
Amazon reference
B0H6FHB7MX (same reference on 6 Amazon marketplaces)
EAN
0714047028612
  • Alloy, diameter and melting point all given
  • No-clean rosin core
  • Flux percentage only on the reel label

Best for: An occasional repairer who needs a small reel of lead-free solder for cables and boards.

≈ 5 €
Check price on Amazon

Specifications

Alloy
Sn99.3 Cu0.7, lead-free, title and first bullet
Melting point
227 °C, third bullet
Diameter
0.8 mm, title and first bullet
Flux type and percentage
Rosin core, no-clean formula, second bullet; the reel label in the product photograph reads FLUX 2.0 %
Net weight
20 g, title and first bullet
Handling guidance
Absent from the listing — “no toxic gas” and “no odour” are the seller’s wording, fourth bullet
Amazon reference
B0H6FHB7MX (same reference on 6 Amazon marketplaces)
EAN
0714047028612

The AIYHSW solder listing, bullet by bullet

Five bullets: one reel of 0.8 mm lead-free solder, 20 g net, in Sn99.3 Cu0.7; a rosin core with a no-clean formula and little spatter; fast soldering and a melting point of 227 °C; high purity and flow, with the seller’s wording of no toxic gas and no odour; and repairs to cables, radios, televisions, circuit boards and toys.

AIYHSW’s tin-copper alloy

Sn99.3 Cu0.7 at 227 °C. Tin-copper is the plain lead-free solder, without silver. AIYHSW calls the melting point low; it is higher than the leaded solders it replaces, and higher than the silver-bearing reels on this site at 217 °C.

What AIYHSW leaves out

No flux percentage in the text, though the reel in the product photograph reads 2.0 %, and nothing on fumes beyond the fourth bullet’s own reassurance. Handling guidance for rosin fumes is on the maker’s safety data, not on this page.

Availability

At the last look-up, the German, French and Spanish Amazon stores were asking 5 € to 7 €.

The asking price on the Italian Amazon store ran past 1.6× the lowest country’s. A gap that size points to goods shipped in from abroad rather than a local seller, so that offer is left out of the figures above.

The American and British Amazon catalogues list the product, yet no seller was offering it.

Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.

Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.

More solder wire

  • FELDER ISO-Core Ultra-Clear reel, 0.50 mm, 0.100 kg, 2.2 % flux, Sn100Ni+, distributed by GALLUNOPTIMAL

    GALLUNOPTIMAL Lead-free solder wire Sn100Ni+, 0.5 mm, 2.2 % halogen-free flux, 100 g, made by FELDER

    A 100 g reel of Sn100Ni+ lead-free solder wire from GALLUNOPTIMAL, made by FELDER in Germany: Sn99.25 Cu0.7 Ni0.05, 0.5 mm, with 2.2 % halogen-free Ultra-Clear REL0 active flux and a melting point of 227 °C, to EN ISO 9454-1.

    Alloy
    Sn100Ni+, micro-alloyed Sn99.25 Cu0.7 Ni0.05, lead-free, first bullet; the reel label in the product photograph reads Sn99.3CuNiGe
    Melting point
    227 °C, third bullet
    Diameter
    0.5 mm, title and fourth bullet
    Flux type and percentage
    2.2 % Ultra-Clear active flux, REL0, halogen-free, second bullet
    Net weight
    100 g reel, title and fourth bullet
    Handling guidance
    Absent from the listing — EN ISO 9454-1 and 1222 named, fifth bullet
    Amazon reference
    B0F8JFHR8M (same reference on 6 Amazon marketplaces)
    EAN
    4250078313038
    • Full alloy with nickel micro-addition: Sn99.25 Cu0.7 Ni0.05
    • Flux class given: REL0, halogen-free, 2.2 %
    • No handling guidance

    Best for: A maker soldering fine electronics who wants an alloy and flux described to a standard.

    ≈ 19 €
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  • Green CHANXUAN reel labelled lead-free, WT 30 g, flux 2.0 %, 0.6 mm ticked

    CHANXUAN Lead-free solder wire Sn99.3 Cu0.7, 0.6 mm, 2 % rosin flux, 20 g net

    A reel of lead-free Sn99.3 Cu0.7 solder wire from CHANXUAN, 0.6 mm with 2 % rosin flux and a melting point of about 227 °C, for a working temperature of 380 ± 20 °C, with 20 g of solder on a 30 g gross reel.

    Alloy
    Sn99.3 Cu0.7, lead-free, title and first bullet
    Melting point
    About 227 °C, third bullet
    Diameter
    0.6 mm, title and fifth bullet
    Flux type and percentage
    2 % rosin flux, low-residue formula needing no cleaning, first and fourth bullets
    Net weight
    20 g net, 30 g gross, fifth bullet; 30 g in the title
    Handling guidance
    Absent from the listing — a working temperature of 380 ± 20 °C is given, third bullet
    Amazon reference
    B0GZ2MHTH5 (same reference on 5 Amazon marketplaces)
    EAN
    0761578230731
    • A working temperature given: 380 ± 20 °C
    • Flux share stated: 2 % rosin
    • 30 g in the title is the gross weight; 20 g is solder

    Best for: A maker soldering small pads and SMD leads who wants a fine wire and an iron setting to start from.

    ≈ 6 €
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  • goobay 40845 reel labelled 250 g, 0.3 % silver, lead-free, 1.0 mm

    goobay Lead-free silver solder wire Ag0.3 Cu0.7, 1 mm, 2.5 % no-clean flux, 250 g

    A 250 g reel of lead-free silver solder wire from goobay, 1 mm, with 0.3 % silver, 0.7 % copper, 96.5 % tin and 2.5 % halogen-free no-clean flux, a melting point of 217 °C and low smoke stated, for cables, boards and appliance repairs.

    Alloy
    96.5 % tin, 0.3 % silver, 0.7 % copper, lead-free, title and first bullet
    Melting point
    217 °C, title and first bullet
    Diameter
    1 mm, title and first bullet
    Flux type and percentage
    2.5 % no-clean flux, halogen-free, first and second bullets
    Net weight
    250 g reel, title and first bullet
    Handling guidance
    Absent from the listing — low smoke during soldering stated, third bullet
    Amazon reference
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    EAN
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    • No handling guidance beyond low smoke

    Best for: A regular solderer or small repair bench that goes through lead-free wire steadily.

    ≈ £37 / 32 €
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Elsewhere on the workbench

  • FELDER Lötfett 20 g tin with a corrosive hazard pictogram, the word Gefahr and a zinc chloride content line

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    Form
    Grease, title
    Chemistry
    Active flux components, classed F-SW 12, second bullet; the tin in the product photograph states zinc chloride and DIN EN 29454.1, 3.1.1.C
    Residue and cleaning
    Corrosive; thorough cleaning of the joints required, second bullet
    Activity level
    Corrosive active flux, F-SW 12, title and second bullet
    Volume
    20 g, title and fourth bullet
    Dispensing
    Tin, fourth bullet
    Handling guidance
    Absent from the listing text — the tin in the product photograph carries a corrosive pictogram, the signal word Gefahr, a warning of serious eye damage and instructions to wear protective gloves, clothing and eye protection
    Amazon reference
    B0DZPL52G4 (same reference on 6 Amazon marketplaces)
    EAN
    4250078327714
    • A flux class given: F-SW 12, corrosive
    • Cleaning requirement stated plainly
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    Best for: A model maker or repairer soft-soldering copper and brass who will clean every joint afterwards.

    ≈ 6 €
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  • Open 50 g tin of pale paste labelled Soldering Flux Paste, Advanced Quality ZJ-18

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    Form
    Semi-solid paste, title and third bullet
    Chemistry
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    Residue and cleaning
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    Activity level
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    Volume
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    Dispensing
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    Handling guidance
    Absent from the listing — “non-toxic, safe” is the seller’s wording; application steps in the fourth bullet
    Amazon reference
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    EAN
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    Form
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    Chemistry
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    Residue and cleaning
    Absent from the listing
    Activity level
    Absent from the listing
    Volume
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    Dispensing
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    Handling guidance
    Absent from the listing
    Amazon reference
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    EAN
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All solder wire