Unshieled Inductors LCH

Through-Hole Radial Power Chokes

Product Overview

The LCH Series Unshielded Inductor delivers robust performance in power conversion applications requiring high current handling (up to 65A) and wide inductance ranges (10μH to 18mH). Featuring radial through-hole construction with flame-retardant polyolefin wrapping, these wire-wound components excel in industrial environments where thermal resilience (-40°C to +125°C) and reliability are critical. Unlike shielded Power Inductor alternatives, their open magnetic structure enables superior heat dissipation.

Key Specifications

• Extended Inductance Range: 10μH to 18mH with ±10% or ±20% tolerance options.

• High Current Capacity: Up to 65A saturation current (Isat) and 28A Irms with low DCR (as low as 0.04Ω).

• Thermal Resilience: Operates from -40°C to +125°C (including coil self-temperature rise).

• Frequency Performance: Self-resonant frequency (SRF) up to 5.6MHz.

• Robust Construction: Radial leads with 260°C solder heat resistance (10s withstand).

• Compliance: RoHS/Halogen-free, MIL-STD-202E solvent resistance.

Technical Advantages

These Unshielded Inductor components outperform traditional Transformers in DC-DC conversion efficiency by minimizing core losses. Their open-drum ferrite core design achieves 40% better heat dissipation than shielded Power Inductor equivalents. For EMI-sensitive designs, pair with our EMC Filter solutions to suppress noise in motor control or Sensor interfaces.

Typical Applications

1. Switching Power Supplies: Primary-side filtering in AC/DC converters handling >15A currents.

2. Industrial Controls: TRIAC/SCR circuits, motor drives, and Sensor power conditioning.

3. Automotive Electronics: LED drivers and Power Converter modules requiring -40°C operation.

4. Consumer Electronics: LCD TV power boards and printer DC-DC converters.

5. Renewable Energy: Solar inverter chokes paired with EMC Filter networks.

Performance Notes

• Current Handling: IDC rated at 10% inductance drop (HP4294A verified @1kHz/0.1V).

• Thermal Management: 40°C temperature rise at rated Irms ensures longevity in compact enclosures.

• Reliability Testing: Withstands 3× reflow cycles at 280°C and humidity extremes (<75% RH).

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