Is Kester 44 solder wire safe for electronics in India?

Yes, Kester 44 solder wire is safe for electronics work when used by experienced technicians with proper safety precautions. It features a 63/37 tin/lead alloy and RMA rosin flux, ideal for fine-pitch PCBs. Always use safety glasses and ensure adequate ventilation to avoid breathing flux fumes, which can cause irritation. This product is imported from authorized US retailers and includes all customs duties and GST.

What is the difference between 63/37 leaded solder and lead-free solder?

63/37 solder, like Kester 44, contains 63% tin and 37% lead, melting at a lower temperature (around 183°C) and offering excellent wetting for electronics. Lead-free solder typically uses tin-silver-copper alloys, melting at higher temperatures (around 217°C) and is required for RoHS compliance in many regions. While lead-free is environmentally preferred, leaded solder is often easier for hobbyists and repairs.

Do I need separate flux when using Kester 44 rosin-core solder wire?

No, Kester 44 solder wire has an integrated Core 66 rosin flux (3.3% flux content) that activates upon heating. This high-activity RA formulation provides excellent solderability for most electronics applications. Supplementary flux is generally not needed unless dealing with heavily oxidized surfaces or very fine-pitch components requiring extra assistance.

How to choose the right solder wire for PCB work in India?

For PCB work in India, choose solder wire based on alloy and flux type. Kester 44's 63/37 tin/lead alloy and RMA rosin flux are excellent for fine-pitch electronics. Ensure the wire diameter matches your component size (0.015-inch is good for fine-pitch). Always source from trusted importers like CrowCrowCrow for authentic products with pre-paid duties and GST.

Can I use Kester 44 solder wire for general electrical wiring?

While Kester 44 is excellent for fine-pitch electronics, its 0.015-inch diameter and specific flux are optimized for PCB work. For general electrical wiring or larger terminals, a thicker gauge solder wire might be more efficient. However, it can be used if precision is required and the smaller diameter is suitable for the connection.

What are the side effects of Kester 44 solder wire fumes?

Kester 44 solder wire fumes, containing flux components and potentially lead vapor, can cause pulmonary irritation or damage if inhaled directly. It is crucial to always use adequate ventilation or a fume extractor when soldering. Avoid breathing the fumes and wash hands thoroughly after use, especially before eating or drinking.

How to buy authentic Kester 44 solder wire in India?

To buy authentic Kester 44 solder wire in India, source from authorized importers like CrowCrowCrow. We ensure products are factory-sealed, imported per-order from authorized US retailers, and include all customs duties and GST. Delivery is via ExpressBox tracked shipping for peace of mind.

Kester 44 Solder Wire 63/37 0.015in RMA Rosin 16.16m (56ft)

Name: Kester 44 Solder Wire, 63/37 Tin/Lead, 0.015-in Diameter, RMA Rosin, 16.16 meters (56 Feet) Tube | Electronics Grade Solder
Brand: Kester
SKU: xkh9512
Price: 2386.00 INR
Availability: InStock

About this item

Kester 44 Solder Wire, a 63/37 tin/lead alloy with a 0.015-inch diameter, is specifically designed for intricate electronics work in India. Its high-activity RMA rosin flux ensures excellent solderability on various metallizations, making it suitable for PCB assembly and repair. This wire is repackaged in a convenient 1/2-ounce tube containing approximately 56 feet.

The Kester 44 flux is a standard Core 66 formulation with 3.3% flux, operating effectively at solder iron tip temperatures between 315-371°C (600-700°F). The flux residue left behind is non-corrosive and non-conductive, crucial for maintaining the integrity of delicate electronic components. It is preferred for fine-pitch electronics work where precision is paramount.

While this solder is ideal for experienced electronics technicians, it is intended for industrial use. Always use safety glasses and ensure adequate ventilation when soldering. Avoid breathing flux fumes, which may cause pulmonary irritation. This product is sourced from authorized US retailers and authorized brand partners, with all customs duties and GST included in the price. Delivery is via ExpressBox tracked shipping.

Key Features

Specially repackaged by TekLine Supply
1/2-Ounce pocket size pack contains approx 56 feet of solder!
67/37 Tin/Lead is most common for electronics work
.015" Diameter is most common for fine-pitch electronics work
High activity RA formulation

Why choose this product

Electronics-Grade Solder for Precision

Kester 44 solder wire is engineered for electronics work, featuring a 63/37 tin/lead alloy and a high-activity RMA rosin flux. This combination ensures superior wetting and solderability on fine-pitch components, crucial for reliable PCB assembly and repair. The non-corrosive, non-conductive flux residue protects sensitive circuits. Sourced from authorized US retailers, it guarantees authenticity for your critical electronics projects.

Ideal for Electronics Technicians, Not for General Use

This solder is best for experienced electronics technicians working on PCBs and fine-pitch components. It is not recommended for general plumbing or metal fabrication due to its specific alloy and flux type. Avoid use if you have sensitivities to lead or flux fumes; always ensure proper ventilation and safety gear. For simpler electrical wiring or non-critical repairs, other solder types might be more suitable.

How to use

Ensure good ventilation by opening a window or using a fume extractor. Wear safety glasses to protect your eyes from flux fumes and stray solder splashes. Have your soldering iron heated to the recommended 315-371°C (600-700°F). — Prepare Your Work Area
Apply a small amount of Kester 44 solder wire to your heated soldering iron tip. This 'tinning' process cleans the tip and improves heat transfer, ensuring a better connection to the joint. — Tin the Soldering Iron Tip
Touch the heated, tinned soldering iron tip to the component lead and the PCB pad simultaneously. Feed the Kester 44 solder wire onto the heated joint, allowing it to flow smoothly and create a clean, shiny connection. — Apply Solder to the Joint
Once the solder has flowed and formed a good joint, remove the solder wire first, then the soldering iron. Allow the joint to cool naturally without disturbing it. The RMA flux residue is non-corrosive and non-conductive. — Remove Solder and Iron

Example scenarios

Typical situations where Kester 44 Solder Wire helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

An electronics hobbyist in Bengaluru needs to repair a delicate circuit board with fine-pitch components.

How this product helps

Using Kester 44 solder wire with its 0.015-inch diameter and high-activity RMA flux ensures precise joints on small components. The 16.16m tube provides ample solder for multiple repairs, offering a cost-effective solution for intricate electronics work.

Scenario 2

Illustrative example

Where it helps

A technician in Delhi requires reliable solder for assembling custom electronics projects where leaded solder is acceptable.

How this product helps

The 63/37 tin/lead alloy in Kester 44 offers excellent solderability and a lower melting point, ideal for efficient assembly. The non-corrosive flux residue protects sensitive circuits, ensuring durable and reliable connections for professional electronics projects.

Specifications & installation

Specifications

Alloy Composition	63% Tin / 37% Lead
Flux Type	RMA (Rosin Mildly Activated)
Flux Core	Core 66 (3.3% flux)
Key Ingredient	Lead
Allergens	Contains Lead (Prop 65 Warning)

Installation & usage

Recommended Use	Fine-pitch electronics work, PCB assembly, repair, or rework
Diameter	0.015 inches (0.38 mm)
Length	16.16 meters (56 feet)
Solder Iron Tip Temperature	315-371°C (600-700°F)
Flux Residue	Non-corrosive and non-conductive
Cost per use	16.16m tube at 0.1m/day = ~161 days of soldering: ₹14.82 per day
Shelf life after opening	12 months (category default for rosin-core solder)
Contraindications	Not for general plumbing or metal fabrication; avoid if sensitive to lead or flux fumes; not for use by untrained individuals.

How we compare

Feature	Kester 44 Solder	Others
Alloy Composition	63% Tin / 37% Lead (Electronics Grade)	Varies by brand; may include lead-free alloys (e.g., SAC305) or different tin-lead ratios (e.g., 60/40) for general electronics or plumbing.
Flux Type	RMA (Rosin Mildly Activated) - High Activity	Rosin-based, no-clean, or water-soluble fluxes; activity levels vary, impacting solderability on oxidized surfaces.
Wire Diameter	0.015 inches (0.38 mm) - Fine Pitch	Typically ranges from 0.5mm to 2.0mm; finer diameters for electronics, thicker for general wiring or plumbing.
Cost per Use	16.16m (56ft) tube — ₹14.82 per day	Local 50g/100g spools can range from ₹200-₹800+, depending on alloy and brand; cost per meter varies significantly.
Application Suitability	Ideal for fine-pitch PCBs, electronics repair, and assembly.

SKU	xkh9512
GTIN	0735255752113
Brand	Kester
Part Number	T44-015-DP
Model Number	731-KES44-015-DP
Color	Gold
Material	Lead
Item Form	Coil
Item Shape	Round Rod
Finish Type	Polished
Item Weight	0.49 kg (1.07 lb)
Item Dimensions	10.16 cm x 2.54 cm x 2.54 cm (4in x 1in x 1in)
Item Package Weight	0.018 kg (0.04 lb)
Item Package Dimensions	12.8 cm x 2.31 cm x 2.21 cm (5.04in x 0.91in x 0.87in)
Number of Items	1
Number of Packs	1
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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Kester 44 Solder Wire, 63/37 Tin/Lead, 0.015-in Diameter, RMA Rosin, 16.16 meters (56 Feet) Tube | Electronics Grade Solder

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