CHINGCUNG®
Precision Enameled Wire · Micro Specialist
⚡ ULTRA-FINE GRADE 1 | DIAMETER 0.03 mm
QA-1/180-0.03 Enameled Copper Wire
Polyurethane Class 180 | Micro-Diameter for High-Precision Coils
Extreme Fine Wire Technology – 0.03mm, direct solderable, thermal class 180
✨ QA-1/180-0.03: Engineered for Micro Electronics
With a conductor diameter of just 0.03mm (AWG 49.5 approx.), this Grade 1 polyurethane enameled copper wire is designed for ultra-compact electromagnetic components. The QA-1/180 thermal rating (Class H, 180°C) ensures reliability in miniaturized transformers, hearing aid coils, micro motors, and fine-pitch voice coils. Grade 1 insulation minimizes outer diameter, critical for space-constrained winding, while polyurethane chemistry allows direct soldering without stripping — ideal for high-density automated assembly.
Technical Specifications – Micro Focus
- Model Number QA-1/180-0.03 (IEC 60317-51)
- Thermal Class 180 (Class H)
- Insulation Type Polyurethane (Modified high-heat)
- Conductor Material Oxygen-free copper (Ultra-fine drawing)
- Film Grade Grade 1 — Minimum insulation increase
- Nominal Conductor Dia. 0.030 mm (±0.001 mm)
- Solderability Direct solder 390~420°C, flux not required (PU film)
- Heat Shock 200°C / 30min, no cracks
- Cut-through Temp. ≥230°C
- Breakdown Voltage (Grade1) ≥ 600V (typical for 0.03mm)
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- Standard Compliance IEC 60317-51, NEMA MW 80-C, GB/T 6109.23
- Elongation ≥ 8% (typical for ultra-fine wire)
- Springiness / Flexibility Excellent, passes mandrel wrap test
- Pin Hole Test Strict zero pinhole policy
- Target Applications Micro transformers, hearing aid coils, miniature actuators, fine gauge solenoids, medical devices, ultra-compact sensors
- Packaging PL-2 / PT-2 / PT-4 spools, anti-static reel available
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Ultra-Fine Dimensional Data – Grade 1 (0.03mm Reference)
For QA-1/180-0.03, the Grade 1 insulation ensures minimal build-up. The table below shows the exact film thickness and maximum outer diameter for 0.03mm conductor compared to other micro sizes.
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Conductor Dia. (mm)
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Tolerance (±mm)
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Min Film Thick. Grade1 (mm)
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Max O.D. Grade1 (mm)
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Min Film Thick. Grade2 (mm)
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Max O.D. Grade2 (mm)
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0.03
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0.001
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0.003
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0.037
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0.006
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0.041
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0.04
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0.001
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0.004
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0.049
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0.008
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0.054
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0.05
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0.001
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0.005
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0.060
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0.010
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0.066
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0.06
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0.001
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0.006
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0.072
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0.012
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0.079
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0.08
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0.003
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0.007
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0.094
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0.014
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0.101
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⚡ Note: For 0.03mm ultra-fine wire, Grade 1 provides approx. 30% thinner OD compared to Grade 2. This space advantage is critical in micro-coil designs with limited winding window. Standard max outer diameter for QA-1/180-0.03 Grade 1 is ≤0.040mm. Solderability & thermal stability 180°C verified by IEC pin-hole test.
Micro-Wire Engineering & Performance
Manufacturing enameled wire down to 0.03mm requires exceptional process precision. CHINGCUNG utilizes dedicated ultra-fine drawing lines and continuous annealing to achieve a uniform copper core with perfect circularity. The polyurethane insulation is applied with laser-controlled concentricity, guaranteeing Grade 1 film uniformity and defect-free surface. QA-1/180-0.03 is specially designed for micro-coils that operate at high temperature (up to 180°C) where traditional polyester wires fail. Low pinhole counts ensure high breakdown voltage retention even after winding stress.
✦ Key Advantages for Micro Applications: Direct solderability eliminates mechanical stripping – a crucial feature for ultra-fine wires that are easily damaged. The thermal class 180 allows compact designs to meet higher temperature limits without insulation degradation. Grade 1 outer diameter (max 0.035-0.037mm) provides maximum copper space factor, improving coil efficiency in limited volume. Additionally, excellent windability reduces wire breaks during high-speed winding processes.
✦ Stringent Quality Control: Every spool of QA-1/180-0.03 undergoes 100% pin-hole detection, continuity testing, and dimensional check via laser micrometers. Our clean-room environment ensures zero contamination for ultra-fine wire production. Traceability from raw copper rod to final spool is maintained to meet medical, automotive and aerospace specifications.
General & Commercial Information
- Place of Origin Jiangsu / Zhejiang, China
- Brand CHINGCUNG®
- Certifications IEC, RoHS, REACH, GB
- Conductor Resistivity ≤0.017241 Ω·mm²/m (20°C)
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- MOQ (Sample) 500g – 2 Kg (negotiable)
- Price Based on Copper + micro-drawing surcharge
- Delivery Time 7-10 days for samples, 15-20 days bulk
- Supply Ability 3 tons/month for ultra-fine series
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QA-1/180-0.03 Test Values (Typical)
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Property
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Test Standard
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Value / Result
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Temperature Index
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IEC 60172
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180°C
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Heat Shock (1d winding)
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IEC 60851-6
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200°C/30min no cracks
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Cut-through Temperature
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IEC 60851-6
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≥230°C
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Breakdown Voltage (Grade1)
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IEC 60851-5
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Min 600V (twisted pair)
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Solderability
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IEC 60851-11
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≤ 2 sec at 400°C
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Pin Hole Count
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High voltage test
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0 pinholes / 30m
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Why CHINGCUNG for Ultra-Fine Wire (0.03mm)?
Micro Expertise
Dedicated machinery for 0.02-0.10mm range, ultra-low tension control, consistent elongation.
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Clean Room Production
ISO Class 7 environment ensures no particle contamination for fine wire reliability.
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Precision Testing
Laser diameter monitoring, online pinhole detection, and thermal shock validation per batch.
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Global Support
Fast logistics from Shanghai, technical team for micro-coil winding consultation.
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CHINGCUNG has successfully supplied ultra-fine enameled wires to hearing aid coil manufacturers, micro motor producers and medical device OEMs globally. The combination of Grade 1 insulation, class 180 thermal rating and 0.03mm diameter delivers a unique solution for next-generation miniaturized electronics. Our engineers provide winding parameter assistance and free sample evaluation.
Micro Wire Resources
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Product Video
Request "QA-1/180-0.03 Micro Winding & Solderability Test" – showing actual 0.03mm wire soldering and flexibility.
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Technical Data Pack
Full micro-wire dimensional table, thermal life curve, and recommended winding tension chart available as PDF.
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QA-1/180-0.03 – Specific FAQs
- Q1: Is 0.03mm enameled wire difficult to handle during winding?
A: QA-1/180-0.03 uses high-purity copper and precise enamel application, offering excellent tensile strength for its size. We recommend optimized tension and wire guide systems; our technical team can provide winding parameters.
- Q2: Can QA-1/180-0.03 be soldered without stripping?
A: Yes, polyurethane insulation is directly solderable. Dip the wire end into solder pot at 400°C for 1-2 seconds — the coating decomposes, leaving a clean tinned surface.
- Q3: What is the typical breakdown voltage for Grade1 0.03mm wire?
A: Typically ≥600V DC, meeting IEC standards for micro transformers and miniature coils.
- Q4: Do you provide sample spools for 0.03mm?
A: Yes, sample spools (500g, 1Kg) are available for engineering qualification. Lead time 7-10 days.
- Q5: What packaging is used to protect ultra-fine wire?
A: Anti-static PL-2 plastic spools with soft layer to avoid wire damage. Vacuum-sealed moisture barrier bags available for long-term storage.
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Ultra-fine QA-1/180-0.03 Enameled Copper Round Wire maintaining direct solderability for household appliance Images
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