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INF designs and manufactures THT Power Inductor solutions for rugged, high‑reliability assemblies. Through‑hole construction provides strong mechanical anchoring, thermal stability, and dependable EMI behavior. Our wire‑wound designs achieve high current capability with low DCR and high saturation current across wide operating temperatures, typically −40°C to +125°C. We support custom specifications, ODM/OEM services, and free samples for fast evaluation in industrial automation, automotive, telecommunications, medical, new energy, and aerospace applications.
We offer radial lead types (non‑shielded and shielded), axial lead inductors for horizontal layouts, and toroidal or rod‑core designs. Core materials include ferrite and iron powder, selected to balance saturation limits, core losses, and EMI performance. Lead spacing, body size, and mounting height can be tailored to fit your footprint and thermal path.
Radial lead inductors suit cost‑sensitive DC/DC stages with broad inductance ranges and low to moderate DCR. Shielded versions reduce stray fields for noise‑sensitive or dense layouts while maintaining high current handling.
Toroidal designs feature a closed magnetic path for low radiation and compact filters. Rod‑core options offer simple, robust construction with good surge tolerance, ideal for pre‑filters and chargers.
| Factor | Why It Matters | Guidance |
|---|---|---|
| Inductance (L) | Sets ripple and dynamic response | Choose L for ripple at the switching frequency; verify transients |
| Current (Irated / Isat) | Thermal rise and saturation margin | Size for continuous load and peak events with margin |
| DCR | Efficiency and heating | Lower DCR reduces I²R loss; balance with size and L |
| Core & Shielding | Losses, EMI, and stray field | Use ferrite for higher frequency; add shielding for dense layouts |
Typical uses include buck/boost regulators, battery chargers, motor drive pre‑filters, power supplies, and inverters. They are well suited to industrial control systems, automotive modules exposed to vibration and heat, telecom and networking equipment needing EMI control, medical instrumentation, and new energy or aerospace platforms.
INF operates under ISO9001 quality management with strict lifecycle controls. Materials and processes align with UL, CE, and RoHS requirements where applicable. Qualification may include thermal cycling, vibration, solderability, and electrical performance verification.
Share your target inductance, current, DCR, size, and EMI constraints. As a THT Power Inductor manufacturer, INF provides free samples and ODM/OEM support to speed validation. Contact our engineers for recommendations and a quote, and move forward with a reliable, custom‑engineered solution.
