AMTECH LF-4300 Sn96.5/Ag3.0/Cu0.5 CORE WIRE 3.3% Flux

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Technical Data Sheet 

Safety Data Sheet 


Amtech's LF-4300 solder wire is a water washable no-clean core wire, designed for lead-free alloys. LF-4300 was designed for hand soldering and re-work applications. The core provides sufficient activity to solder successfully to bare copper and other hard-to-solder surfaces. The residue is a light amber color. 

Physical Properties 

Standard Alloys: Sn96.5/Ag3.0/Cu.5
Standard Roll Size: 1 LB
Flux Percentage: 3.3% 
Standard Diameters: .015", .020", .031"

Temperatures: Sn96.5/Ag3.0/Cu.5: Non Eutectic @ 217 - 219°C

Test Results

Halide Content Passes Silver Chromate Paper Test
Corrosiveness Passes Copper Mirror Test
Electromigration Passes Bellcore visual


(7 days @ 85C-85% R.H.) 

Bellcore TR-NWT-000078 Meets Requirements
Ansi/J-STD-004 Meets Requirements
Flux Designation REL0


The expected shelf life is at least 36 months when stored in normal conditions.

The information contained herein is based on technical data that we believe to be reliable and is intended for use by persons having technical skill, at their own risk. Users of our products should make their own tests to determine the suitability of each product for their particular process. AMTECH will assume no liability for results obtained or damages incurred through the application of the data presented.