Power Inductors from INF are engineered for switching power supplies where energy storage, ripple control, and low loss are essential. Key parameters—saturation current, DCR, core loss, and DC bias—directly affect efficiency and temperature rise. We deliver high-current, low-DCR components with stable inductance and controlled flux for strong EMI performance, available as reference parts or engineered-to-order with free samples for buck/boost, POL, VRM, LED drivers, and inverters.
High current capability with optimized saturation and thermal rise
Low DCR for improved efficiency
Stable inductance under DC bias and high frequency
Shielded options for reduced leakage flux and better EMI
Compact footprints tailored to your layout
INF Power Inductors – Design & Manufacturing Advantages
INF (Nanjing Infinity Technology Co., Ltd.) tailors inductance, current rating, size, and materials to your topology and targets. Our ODM/OEM process covers requirement capture, magnetic modeling, prototyping, and validation with close engineering support. Production follows ISO9001, with UL/CE/RoHS conformity as applicable and reliability testing for temperature and vibration. Designs for harsh automotive environments are available. Explore our digital showroom and use free samples to de-risk NPI.
Power Inductor Types & Mounting Options
Choose SMD or through-hole formats and the core construction that balances frequency loss, bias performance, and EMI.
| Type | Mounting | Key Advantages | Common Uses | Materials |
| SMD molded/shielded | SMD | Low profile, low DCR, strong DC bias, low leakage | POL, VRM, compact DC-DC | Ferrite or metal composite |
| Radial leaded (DR Series) | Through-hole | Rugged mounting, wide L range, serviceable | Industrial SMPS, control boards | Ferrite cores |
| Toroidal / Drum-core | Through-hole or custom | Very low leakage (toroid), high current in compact sizes (drum) | PFC, filters, energy storage | Ferrite or composite/powder |
SMD Shielded Power Inductors
Molded, shielded SMD versions confine fields in dense layouts. They pair low DCR with strong DC bias for efficient operation in POL regulators, VRMs, and compact DC-DC stages. Custom options include inductance, tolerance, package, and thermal tuning.
Toroidal and Drum-Core Power Inductors
Toroids offer very low leakage flux for filters, PFC, and high-current energy storage. Drum-core parts provide a compact path to higher current with a tailored electrical and mechanical fit. Materials are selected to match switching frequency and target loss.
Applications & Selection Guide for Power Inductors
These components are proven in buck, boost, buck-boost, auxiliary converter stages, input/output filters, and PFC. We support automation equipment, robotics, servers, base stations, medical devices, EV subsystems, energy storage, and solar inverters. Designs can be configured for wide temperature ranges and vibration.
Define switching frequency and target ripple; calculate inductance.
Set margins for Isat and Irms under worst-case conditions.
Balance DCR with efficiency and temperature rise; choose core material and shielding.
Confirm footprint, height, airflow, and any UL/CE/RoHS requirements.
Request a Quote or Sample for Power Inductors
Send your topology, switching frequency, target inductance and ripple, Isat/Irms and DCR goals, dimensions, ambient conditions, quantities, and any UL/CE/RoHS needs. As a power inductors manufacturer and custom solutions partner, INF will review your design, provide free samples, and prepare a clear quotation. Contact our engineering team to discuss your application.
