EQ-STD Purified Rosin Cored Solder Wire
Professional No-Clean Solder Wire
A recommended solder wire for all professional applications. EQ-STD solder wire is a high-purity, “no-clean” solution engineered for product longevity, rapid soldering speed, and minimal, non-corrosive residue.
Clear Residue
Based on modified rosins that leave transparent, non-corrosive residues for a professional finish.
Virgin Materials
Manufactured from the finest extra-purified virgin metals to ensure absolute product continuity.
SMT Ready
Classified for all applications including wave solder and precision surface mount (SMT) re-work.
Technical Specifications
| Property | Value / Specification |
|---|---|
| Flux Content | 2.5% w/w |
| Acid Value | 215 – 230 mg KOH/g |
| Halide Content | 0.4% |
| Copper Mirror | Pass |
| Iron Tip Temp | 340°C – 420°C |
Available Alloy Variants
Standard 60/40 Alloy +
Non-Toxic Lead Free 99C +
Specialty Alloys (LMP / HMP / Copper Loaded) +
Safety & Handling
Usage & Fume Safety +
Avoid excessive inhalation of flux fumes, as they can irritate the respiratory system. Always use suitable fume extraction equipment.
Note: Lead is harmful if absorbed. No eating, drinking, or smoking in the work area. Wash hands thoroughly after use.
Storage Instructions +
Industry Compliance +
EQ-STD is manufactured in accordance with a vast range of international standards to guarantee peace of mind, including:
- BS EN ISO9453:2020(E)
- GR-78-CORE
- JIS-Z-3282 / ASTM-B32
- QQS 571E / DIN 8511
Frequently Asked Questions
Does EQ-STD solder wire require cleaning after use? +
No, EQ-STD is a true “no-clean” solution. It is formulated with modified rosins that leave a transparent, non-corrosive residue, eliminating the need for post-solder washing and ensuring long-term reliability.
Does this solder “spit” or “crackle” during use? +
EQ-STD is engineered for minimal spatter. If you experience “spitting,” it is often caused by moisture absorption in the flux core due to high humidity. Always store your spool in a dry, cool environment (below 22°C and 80% RH) in its original container to prevent this.
Can I use this for plumbing or heavy-duty repairs? +
No. This is a rosin-based electronics solder. It should never be used for plumbing, as it does not contain the aggressive acid fluxes required for water pipes. Conversely, plumbing flux should never be used on PCBs as it will corrode electronic traces.
How do I know which wire diameter to choose? +
The best diameter depends on your component size:
- 0.3mm – 0.5mm: Ideal for high-density SMT and fine-pitch soldering.
- 0.7mm – 1.0mm: The standard for general through-hole components and hobbyist work.
- 1.2mm+: Best for large connectors, heavy-gauge wires, and heat-sinked joints.
Is it safe to leave the residue on the board? +
In most standard electronics applications, yes. EQ-STD is designed to leave a low-residue, non-corrosive finish under normal operating conditions. Cleaning is recommended for high-frequency circuits, aerospace or other high-reliability assemblies, and any project where residue removal is required for conformal coating or visual inspection.
What are the safety requirements for handling leaded solder? +
When using leaded variants (like 60/40), avoid eating, drinking, or smoking in the work area. Always use fume extraction to avoid inhaling flux vapours and wash your hands thoroughly after use to prevent lead absorption.