Power inductors
Custom solutions for your need
Ole Wolff inductor series
Power inductors can be custom-made to meet specific requirements. The specifications for a custom power inductor can vary depending on the application. Customization is based on parameters such as inductance, rated current, DC resistance, self-resonant frequency, operating temperature range, and package size.
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Shielded
Molded series
Alloy metal molded
Description: Alloy metal molded with AECQ200 certification.
- Low loss
- Low DCR
- Low acoustic and leakage flux noise
- High reliability
- Frequency to 3MHz
- Available in 2.2x1.4mm to 9.5x4.5mm.
Typical use: Various circle air coil, high Q and current, for base station and LNA and LC filters etc.
See products »Miniature molded type
Description: High saturation current realized by material properties and structure design.
- Low DCR to achieve high conversion efficiency and lower temperature rise
- Magnetically shielded structure to accomplish high resolution in EMC protection
- Available in 2.0x1.6mm to 2.5x2.0mm.
Typical use: Small portable DC to DC converters, Smart phones and tablets, power supply modules with slim form factor, general DC/DC converters etc.
See products »Carbonyl powder molded
Description: Carbonyl powder molded inductor.
- Low core loss
- High current
- Ultra low buzz noise
- Frequency to 3MHz
- Available in 4.4x4.2mm to 13.5x12.6mm.
Typical use: Switches and servers, laptops and PCs, base stations, battery powered devices, DC/DC converters etc.
See products »Composite injection molded
Description: Composite material molded with T core & coil.
- Excellent current handling
- Low DCR
- Soft saturation
- Minimizes audible buzzing
- Available in 4.1x4.1mm to 7.8x7.6mm.
Typical use: For auto industry components, EV charging, VRM/VRD applications, switches and server base stations, DC/DC converters etc.
See products »Mini composite injection molded
Description: Molded series with alloy metal powder.
- Small size with high rated current
- Frequency up to 3 MHz
- Soft saturation
- 125°C maximum total temperature operation
- Low core loss
- Ultra low buzz noise due to molding construction
- Halogen Free & ROHS compliant
- Available in 1.0x0.3mm to 4.1x1.2mm.
Typical use: Laptops and PCs, Switch and servers, Base stations, DC/DC converters, Battery powered devices, SSD modules etc.
See products »Plastic molded
Description: Molded series with Plastic powder.
- Great durability for heating
- Accurate dimensions for high precision mounting
- High resistance to heat, humidity, mechanical shocks and pressure
- Metal terminals for excellent connection reliability
- Available in 3.2x2.5mm to 4.5x3.2mm.
Typical use: Communication equipment, instrumentation, video and audio etc.
See products »Fe-Si alloy molded
Description: Fe-Si alloy hot compression molding.
- Excellent EMC performance
- Large saturation current
- Class H flat copper wire winding
- Resistance to reflow soldering with 260°C
- Available in 19.0x19.0mm.
Typical use: For electrical vehicles, photovoltaic products, wind energy products, energy storage inductors etc.
See products »Hidden
NR series
NR series
Description: Ferrite core, semi-shielded, magnetic epoxy.
- Magnetic resin shielded construction reduces buzz noise to ultra-low levels
- Metallization on ferrite core results in excellent shock resistance and damage-free durability
- 30% higher current rating than conventional inductors of equal size
- Takes up less PCB real estate and saves power
- Available in 3.0x3.0mm to 8.0x8.0mm.
Typical use: Flat-screen TVs, blue-ray disc recorders, set top boxes, cameras and smart phones, portable gaming devices, GPS, multimedia devices, telecom base stations, VR/AR-glasses etc.
See products »Miniature NR inductor
Description: Half-shielded magnetic epoxy core.
- Shielded and miniature design
- High saturation
- Available in 2.0x2.5mm.
Typical use: Smartphones, tablets, wearable devices, camcorders, DC/DC converters etc.
See products »High current NR inductor
Description: Ferrite core, semi-shielded magnetic epoxy.
- Shielded and miniature design
- Ultra-high saturation current
- Available in 2.0x2.5mm to 4.0x4.0mm.
Typical use: Smartphones, tablets, wearable devices, camcorders, DC/DC converters etc.
See products »Miniature with large current NR inductor
Description: Ferrite core, semi-shielded magnetic epoxy.
- Shielded and miniature design
- High saturation
- Available in 1.6x2.0mm to 2.0x2.5mm.
Typical use: Smartphones, tablets, wearable devices, camcorders, DC/DC converters etc.
See products »Hidden
Combined SMD inductor
High saturation inductor
Description: Shielded power inductor.
- Magnetic shielded
- High saturation
- Available in 6.0x6.0mm to 12.5x12.5mm.
Typical use: AP routers, LED lightings, monitors and power supply For VTR, LCD display, computers, portable communication, DC/DC converters etc.
See products »HV power inductor
Description: Inductor with metal base - 2pins.
- Shielded power inductor
- Wide inductance range
- Available in 3.0x3.0mm to 12.x12.5mm.
Typical use: Power supply for VTR, OA equipment, LCD television, notebook PC, portable communication equipment, DC/DC converters etc.
See products »Shielded CD inductor
Description: Shielded power inductor.
- High performance inductor
- Available in 6.2x5.8mm to 12.5x11.5mm.
Typical use: Power supply for VTR, OA equipment, LCD television set, notebook PC, portable communication equipment, DC/DC converters etc.
See products »Shielded drum core inductor
Description: Shielded power inductor.
- Magnetically shielded and low DC resistance
- Suitable for large currents
- Ideal for a variety of DC-DC converter applications
- Available in 5.0x5.0mm to 18.5x15.2mm.
Typical use: Power supply for VTR, OA equipment, LCD television set, notebook PC, portable communication equipment, DC/DC converters etc.
See products »High transient current, shielded
Description: Shielded power inductor.
- Magnetic shielded
- Handles high transient current spikes without saturation
- Available in 8.8x8.4mm to 12.5x11.7mm.
Typical use: Graphic cards, PCs, servers etc.
See products »Unshielded
CD winding series
Description: Power inductor for low tolerances at high inductance values.
- Unshielded power inductor
- Wide inductance range
- Available in 4.5x4.0mm to 10.0x9.0mm.
Typical use: Graphic cards, DC/DC Converters etc.
See products »Drum core SMD inductor
Description: Power inductor without shield.
- Unshielded power inductor
- SDO family is designed for low resistance and high current
- Available in 6.6x4.5mm to 19.0x15.7mm.
Typical use: Power supply for VTR, OA equipment, LCD television set, notebook PC, portable communication equipment, DC/DC converters etc.
See products »Low-voltage miniature inductor
Description: The series exhibits low voltage drops and small variations in inductance with respect to temperature rise and DC current level. This makes them excellent for use as power supply line choke coils.
- Low DC resistance
- High current
- High inductance
- Available in 3.2x1.6mm to 5.7x5.0mm.
Typical use: Personal computers, disc drives and computer peripherals, pagers, cordless phones, DC power supplies etc.
See products »RF component
Wire wound ferrite inductor
Description: Inductor series with wire wound ceramic chip.
- Very strong solderability by flow soldering and soldering iron
- Terminals are highly resistant to pulling forces
- Highly resistant to mechanical shock and pressure
- Highly reliable in environments of sudden temperature change and humidity
- Available in 1.8x1.2mm to 2.4.0x1.7mm.
Typical use: LCDs, video cameras, portable VCRs, car stereos, mobile phones, radios etc.
See products »Air coil inductor
Description: Circular air core inductor.
- High current handling
- Low loss
- Low DCR
- Available in 2.2x1.4mm to 9.5x4.5mm.
Typical use: Base Stations, LNAs and LNBs for satellite etc.
See products »Shielded air coil inductor
Description: Rectangular air core inductor.
- High current handling
- Low loss
- Low DCR
- Available in 1.3x1.8mm to 3.0x2.1mm.
Typical use: Base Stations, LNAs and LNBs for satellite etc.
See products »Differential mode choke
HF, high current
Description: High current power inductor.
- Surface mount inductors for high speed and high current
- Ideal for switch mode applications requiring low inductance
- Gapped ferrite cores for maximum efficiency
- Available in 7.2x7.0mm to 15.0.0x7.0mm.
Typical use: Voltage regulator modules (VRMs) for servers, high frequency high current switch mode PSUs etc.
See products »Gapped ferrite core
Description: High current power inductor.
- Surface mount inductors for high speed and high current
- Ideal for switch mode applications requiring low inductance
- Gapped ferrite cores for maximum efficiency
- Available in 7.0x5.8mm to 13.5x13.0mm.
Typical use: Voltage regulator modules (VRMs) for servers, high frequency high current switch mode PSUs etc.
See products »SMD inductor with flat wire
Description: Low DC resistance power inductor.
- Low DC resistance
- Available in 13.0x12.5mm.
Typical use: Power supply for VTR, OA equipment, LCD television set, notebook PCs, portable communication equipment, DC/DC converters etc.
See products »DIP power inductor
Description: High current power inductor.
- Surface mount inductors for high speed and high current
- Ideal for switch mode applications requiring low inductance
- Gapped ferrite cores for maximum efficiency
- Available in 10.0x9.0mm to 10.5x7.5mm.
Typical use: Voltage regulator modules (VRMs) for servers, high frequency high current switch mode PSUs etc.
See products »Chokes (custom various types)
Description: Custom various chokes - Drum core choke and Toroid choke.
- Surface mount inductors for high speed and high current
- Ideal for switch mode applications requiring low inductance
- Gapped ferrite cores for maximum efficiency
- Available in 8.0x9.5mm.
Typical use: Voltage regulator modules (VRMs) for servers, high frequency high current switch mode PSUs etc.
See products »Ensuring the highest quality standards with automation
Our Automatic Test & Package system for SMD power inductors ensures that our high-quality components are meeting strict standards, while streamlining production for efficiency and cost-effectiveness.
Integrating Automatic Optical Inspection (AOI) checks adds precision, catching even the smallest defects often missed in manual inspections.
And it’s not just SMD power inductors – Through-Hole Technology (THT) power inductors also benefit from our automated testing, ensuring consistent and reliable production.
Do you want to know more about power inductors
Send an e-mail or contact your local sales contact to learn what Ole Wolff can do to help developing your products.
+45 5783 3830