Precision Bobbin Coils — Custom OEM/ODM Manufacturing

Custom bobbin-wound coils on standard or custom bobbins, including nylon, POM, PBT and ferrite core-compatible options. Supports EE, EI, UI and pot core geometries with 100% electrical testing.

Military and Medical Coils

Precision Bobbin Coils — Custom OEM/ODM Manufacturing

Custom military and medical coils manufactured for high-reliability applications, with precision winding, stable electrical performance, strict quality control, and OEM/ODM support based on drawings, samples, or project specifications.
Winding MaterialCopper / Enameled / Litz / Aluminum / Flat / Self-bonding / etc
Winding Precision± 0.01mm
Winding TurnsCustomizable (1T – 10,000T)
Minimum Order QtyCustomizable
Lead Time7–15 business days
Payment TermsT/T, L/C, Western Union
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Typically responds within 24 hours · Free samples available

30+ Years Experience
ISO Certified Factory
Shipped to 30+ Countries

Military and Medical Coils are precision electromagnetic components designed for applications that require high stability, reliable performance, and strict process control. WIRESUN manufactures custom coils for medical devices, diagnostic equipment, sensing systems, communication modules, aerospace components, defense electronics, and other high-reliability projects.


Each coil can be customized according to customer drawings, samples, or electrical requirements, including wire material, coil shape, winding turns, resistance, inductance, insulation grade, and dimensional tolerance. With CNC precision winding equipment, controlled tension processing, and batch-level inspection, WIRESUN supports prototype development, small-batch validation, and mass production for demanding OEM/ODM projects.

Applications

Smartphones & 3C Electronics
Automotive Electronics
Industrial Sensors
Precision Instruments
Audio Equipment
Wireless Charging
ItemSpecification
Product NameMilitary and Medical Coils
Coil TypePrecision electromagnetic coil / Sensor coil / Medical device coil / Custom wound coil
ApplicationMedical devices, diagnostic equipment, sensing systems, aerospace components, defense electronics, communication modules
Wire MaterialEnameled copper wire, Litz wire, self-bonding wire, silver-plated wire, or custom specified material
Wire DiameterCustomizable according to drawing or sample
Coil ShapeRound, rectangular, oval, micro coil, air core, bobbin coil, or custom geometry
Winding TurnsCustomizable
ResistanceCustomized to customer specification
InductanceCustomized to customer specification
Dimension ToleranceCustomizable based on project requirements
Winding MethodPrecision CNC winding with controlled wire tension
Insulation RequirementCustomized according to voltage, temperature, safety, and operating environment requirements
Reliability RequirementHigh consistency, stable electrical performance, and controlled production process
Quality ControlAppearance inspection, dimension check, resistance test, inductance test, continuity test, and batch inspection
Production TypeOEM / ODM / drawing-based custom manufacturing
Sample SupportAvailable
Our standard MOQ is 500 pcs for most coil types. For first-time customers or prototype evaluation, we accept small trial orders of 10-50 pcs. MOQ may vary by product complexity. Contact us for a specific quote.
Yes. Samples are available within 5-7 business days after engineering confirmation. A nominal sample fee applies, which is credited toward your first mass production order.
You can email drawings such as PDF, DWG, or STEP files, or fill out our inquiry form. If you do not have drawings, a written description or physical sample is also acceptable.
We can wind wire as fine as 0.01mm using Zongheng CNC precision winding machines with automated tension control.
Yes. Our special-shaped coil series handles non-circular and irregular geometries. Submit your drawings and our engineering team will assess feasibility.
Standard options include bare copper wire, enameled copper wire, and Litz wire. Custom alloy or coated wire options are available on request.
Yes. Provide your target inductance, frequency, and DC resistance requirements, and we will calculate and wind to specification.
WIRESUN is ISO 9001 certified. Products can ship with test reports and COA. Third-party inspection can be arranged upon request.
All coils are wound on CNC machines with precision control. Each production batch undergoes electrical testing, including inductance, DCR, and impedance checks.
Standard documentation includes packing list, commercial invoice, Certificate of Analysis, and electrical test report. RoHS/REACH documents are available upon request.
We ship worldwide. Regular destinations include Southeast Asia, Europe, the Americas, the Middle East, and Russia. Express and sea freight options are available.
Standard terms are 30% T/T deposit upon order confirmation and 70% balance before shipment. L/C is accepted for larger orders, and Western Union is available for sample fees.
Standard products usually take 15-20 business days. Complex custom coils generally take 20-30 business days. Final lead time is confirmed at quotation stage.