A Rod Core Inductor uses a ferrite rod wound with copper wire and radial leads to deliver compact, cost-effective inductance. It passes DC and low‑frequency AC while blocking high‑frequency noise, making it a dependable power choke for converters and filters. Designs emphasize low loss, high saturation current, and mechanical robustness. Typical operation reaches 125°C, with material options enabling higher limits when required.
Within our Power Inductors portfolio, we engineer values, DCR, Isat, SRF, and size to your targets for DC‑DC regulators, LED drivers, motor control, and RF/VHF suppression. ODM/OEM flexibility and lifecycle technical support help you meet performance and cost goals quickly.
Rod Core Inductor Types and Mounting Options
Choose unshielded, coated, or sleeved versions for added insulation and durability. These through‑hole (DIP) parts can mount vertically to save PCB area or horizontally to lower height. Lead‑free, tinned leads ensure reliable soldering. Custom lead length and spacing can match your footprint.
Shielding and noise considerations for Rod Core Inductors
Unshielded parts allow some magnetic field spread. Sleeves or molded options reduce coupling to nearby traces. Place the choke away from high‑impedance nodes, minimize loop area, and orient it to limit interaction with adjacent magnetics.
Materials and Electrical Characteristics of Rod Core Inductors
Ferrite selection sets permeability, Q, and core loss. We balance inductance per turn with low loss across the intended frequency range. High Isat accommodates ripple and transients, while Curie temperature and allowable rise guide thermal margins.
Key parameters include inductance and tolerance, DCR, Irms, Isat, Q factor, and SRF. RoHS materials are standard. Under ISO9001‑managed processes, models can be engineered to meet UL/CE needs where applicable.
Applications of Rod Core Inductors
Use these inductors in buck/boost converters, LED drivers, adapters/chargers, motor drivers, and audio/power amplifiers. They also serve as effective input/output filters and VHF chokes. Industries include industrial automation, computing and telecom equipment, automotive electronics, medical devices, and new energy systems. For harsh environments, we can adapt materials, coatings, and bonding for added reliability.
How to Select the Right Rod Core Inductor
| Selection factor |
Why it matters |
Guideline |
| Inductance & tolerance |
Controls ripple and filter corner |
Choose L for topology; use ±5%–±10% when tight control is needed |
| Isat (saturation) |
Avoids inductance collapse at peaks |
Keep 20%–40% margin above worst‑case peak |
| DCR |
Impacts efficiency and temperature rise |
Minimize along power paths; balance size/cost |
| SRF & Q |
Defines inductive range and losses |
Target SRF well above operating frequency |
| Mechanical/EMI |
Fit and field containment |
Select vertical/horizontal; add sleeves if needed |
Typical ranges for Rod Core Inductors
Inductance: ~1 µH to 1000 µH; current rating: hundreds of mA to several A; SRF: ~1 MHz to tens of MHz; operating temperature: −40°C to +125°C (higher on request); tolerances: ±5%, ±10%, ±20%.
Custom Rod Core Inductors: ODM/OEM Support
We tailor inductance, tolerance, wire gauge, winding pattern, core length/diameter, lead length/spacing, insulation, and packaging. Performance can be optimized for DCR, Isat, and SRF at your operating frequency and thermal profile. We provide drawings, test data, and free samples to speed validation, plus DFM, layout, and thermal guidance.
Request a Quote and Free Samples for Rod Core Inductors
Share your target L and tolerance, switching frequency, ripple/peak current, size and lead spacing, temperature range, and volumes. We will respond quickly with feasibility and samples. As a China‑based manufacturer and supplier of custom magnetic components, we can design‑to‑spec and deliver a Rod Core Inductor solution aligned with your performance, cost, and compliance needs.
