Kester K100LD 24-9574-7618 Lead-Free Solder 0.031 in
- 0.031 inch (0.80 mm) wire, 1 lb
- Lead-free no-clean K100LD alloy
- J-STD-004 certification listed
- Made in the United States
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lead-free, no-clean K100LD wire solder at a thin diameter, made in the United States. The listing gives no flux percentage or melting range.
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ASIN: B00FGHTTPEModel: K100LDCategory: Solder
Overview
Not a leaded or activated-rosin wire, this Kester K100LD solder omits lead, needs no board cleaning afterward and carries a green color code. The listing names the diameter and certification and leaves other details out.
An alloy without lead, a flux that needs no washing and a stated standards certification cover the main selection points for electronics work. The limitation is thin detail: no flux percentage, melting range or composition is given, and the brand field merges the maker with a part code.
Who it's for
Technicians who work to lead-free rules and skip board cleaning get both from this wire. Anyone planning temperature settings from the listing will find no figures to use.
Pros and cons
- United States origin
- Brand field merges maker and part code
- Flux percentage not listed
- Material field says copper
Performance notes
The flux is meant to leave residue that can stay on the board, and the lead-free alloy calls for an iron hot enough for its melting point, which the listing does not state.
Specifications
| Brand | Kester443-845 |
|---|---|
| Model | K100LD |
| Dimensions & fit | |
| Wire diameter | 0.031 inches (0.80 mm) |
| Item weight | 1 pound |
| Construction & materials | |
| Material | Lead-free K100LD (material field: copper) |
| Color | Green (lead-free) |
| Other details | |
| Certification | J-STD-004 |
| Flux type | No-clean |
| Country of origin | United States |
| Flux % | 3.3 % |
| Lead Free | Yes |
Frequently asked questions
Is the K100LD wire lead-free?
Yes. The title and the color field both say lead-free.
Does it carry a certification?
The certification field lists J-STD-004.
Where is it made?
The description gives the country of origin as the United States.