DKL Clearflow L0 No-Clean Cored Solder Wire
No-Clean and Halide-Free
DKL Clearflow L0 wire is a no-clean, halide-free cored solder wire manufactured using a unique modified rosin flux system. It leaves minimal clear residue, generates no offensive odours during soldering, and is designed for high-reliability electronic assemblies where post-solder cleaning is undesirable or impractical.
Halide Free
Formulated without halides to meet ROL0 requirements under J-STD-004B, Clearflow L0 is ideal where long-term reliability and freedom from corrosion are critical.
Clear Residue
The modified rosin system produces an absolute minimum of clear, non-tacky residue, offering an excellent cosmetic finish and helping maintain high surface insulation resistance.
High Reliability
Clearflow L0 passes surface insulation resistance, electro migration, copper mirror, and copper corrosion tests, supporting robust performance in demanding electronic environments.
Standards Compliant
Complies with BS 441 Rosin Class 5B, DTD 599A, and QQS 571E-RMA, aligning with widely recognised international standards for rosin-based fluxes.
📊 Technical Specifications
| Property | Specification / Value |
|---|---|
| Flux Classification | ROL0 (J-STD-004B) |
| Acid Value | 260 mg KOH/g (Typical, J-STD-004B) |
| Halide Content | Halide Free, ≤ 0.05% (J-STD-004B, IPC-TM-650 2.3.28; < 1000 ppm JIS Z 3197) |
| Surface Insulation Resistance | Pass (J-STD-004B, IPC-TM-650 2.6.3) |
| Electro Migration | Pass (Bellcore GR-78, IPC-TM-650 2.6.14) |
| Copper Mirror Test | Pass (J-STD-004A/B, IPC-TM-650 2.3.32) |
| Copper Corrosion Test | Pass (J-STD-004A/B, IPC-TM-650 2.6.15) |
| Flux Content | Available in 1% and 2% flux by weight |
| Available Alloy Composition | SN100C (Sn-0.65Cu-0.05Ni + Ge) and other standard DKL alloys on request. |
| Shelf Life | 4 years guaranteed when stored dry between 10°C and 40°C; indefinite shelf life if stored correctly. |
| Standard Packaging |
0.25Kg
0.5Kg 2.5Kg 3Kg 5Kg 10Kg 15Kg 25Kg
Other reel sizes and packaging formats available on request.
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* Complies with BS 441 Rosin Class 5B, DTD 599A, and QQS 571E-RMA standards.
📏
Unsure about sizing? View our Solder Wire Gauge Guide
🛠️ Typical Applications
DKL Clearflow L0 Wire is suitable for manual and robotic soldering of a wide range of electronic assemblies, including through-hole joints, rework operations, and fine electronic repairs where a no-clean, low-residue solution is preferred.
Its halide-free formulation and strong electrical reliability make it particularly attractive for high-reliability sectors such as industrial controls, instrumentation, and communication electronics.
📦 Handling and Storage
To achieve the best performance, store Clearflow L0 in dry conditions between 10°C and 40°C and keep reels in their original packaging until use.
Under these conditions the product carries a guaranteed shelf life of 4 years and can remain usable for much longer when stored correctly.
Clearflow L0 FAQ
Why choose Clearflow L0 over other no-clean fluxes?
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Clearflow L0’s unique modified rosin produces the absolute minimum clear residue with no offensive odours—perfect for high-reliability electronics where corrosion risk must be zero.
Is Clearflow L0 truly halide-free and what tests does it pass?
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| Test | Method | Result |
|---|---|---|
| SIR | IPC-TM-650 2.6.3.3 | Pass |
| Electro Migration | Bellcore GR-78 | Pass |
| Copper Corrosion | IPC-TM-650 2.6.15 | Pass |
| Copper Mirror | IPC-TM-650 2.3.32 | Pass |
Do I need to clean Clearflow L0 residues after soldering?
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No. It’s a true no-clean flux. Residues are minimal, clear, non-tacky, non-corrosive—no post-solder cleaning required where process allows.
What standard reel sizes are available?
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0.25kg, 0.5kg, 2.5kg, 3kg, 5kg, 10kg, 15kg, 25kg reels standard. Custom packaging on request.
What is the guaranteed shelf life?
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4 years guaranteed (10°C-40°C, dry storage). Indefinite with proper conditions.
What alloys pair with Clearflow L0?
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Lead-free alloys like Sn100C and SAC305 pair perfectly.