Kester 44 24-6040-0027 Sn60 Pb40 Rosin Core Solder
- Sn60/Pb40 alloy
- 21 AWG, 0.03 inches diameter
- 44 rosin activated flux, core size 66
- 1 lb spool
- Made in the United States
Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A thinner leaded rosin core solder for electronics hobbyists and repair work who want Kester's activated flux. It is leaded, so it does not suit lead-free builds.
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ASIN: B0032UVNJWModel: 44Category: Solder
Overview
An electronics hobbyist or repair tech gets a thinner gauge of Kester activated rosin core solder in a tin-lead alloy on a one pound spool. The flux core runs inside the wire, so it cleans and wets the joint as the solder melts.
A thinner wire gives finer control on circuit boards and small joints, with the same activated rosin flux. Leaded alloy flows easily but rules out lead-free projects.
Who it's for
Bench techs and kit builders get a thinner leaded wire that feeds precisely onto small pads. Builders under lead-free requirements need another alloy.
Pros and cons
- Thin gauge for board work
- Activated rosin flux core
- Full one pound spool
- Made in the United States
- Flux percentage not listed
- Leaded alloy needs ventilation
Performance notes
The thin wire delivers small amounts of solder, which helps avoid bridges on tight pads. Activated rosin in the core strips oxides as it melts, so joints wet without much heat dwell.
Specifications
| Brand | Kester |
|---|---|
| Model | 44 |
| Dimensions & fit | |
| Wire diameter | 0.03 inches |
| Core size | 66 |
| Spool size | 1 lb |
| Item weight | 16 ounces |
| Construction & materials | |
| Material | Sn60/Pb40 (tin, lead) |
| Other details | |
| Part Number | 24-6040-0027 |
| Gauge | 21 AWG |
| Flux type | 44 rosin activated |
| Country of origin | United States |
Frequently asked questions
Do I need separate flux with this Kester 21 AWG solder?
The wire has an activated rosin flux core built in. The listing gives no guidance on extra flux or residue cleaning.
Is this Kester 21 AWG solder lead-free?
No. It is Sn60/Pb40 tin-lead.
How much solder is on this Kester spool?
The spool size is 1 lb.
Where is this Kester solder made?
In the United States.