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Chip inductors: multilayer & wire-wound from Sunlord

In modern electronics, passive components such as inductors are indispensable for signal processing, filtering, and energy conversion.

SMD (surface mount device) chip inductors in particular play a crucial role in countless applications due to their compact design and reliability.

alfatec, your partner for electronic components, offers high-quality chip inductors from the Chinese manufacturer Sunlord in Shenzhen. Discover our portfolio, which is specially tailored to your needs.

Overview – SMD Chip Inductors: Types and Technologies

SMD chip inductors come in various designs that differ in structure, materials, and electrical characteristics. The two most common types offered by alfatec from Sunlord are: 

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1. Multilayer Ferrite Inductors: 

  • Structure: Composed of multiple layers of ferrite material and internal conductive coil patterns, sintered into a monolithic component. 
  • Features: Very compact, excellent high-frequency characteristics, and high packing density. Ideal for applications where space-saving and high-frequency impedance are critical. Sunlord offers series such as the MCL Ferrite Power Inductors. 
  • Material: Primarily ceramic ferrite materials. 

2. Wire-Wound SMD Inductors: 

  • Structure: A fine wire is precisely wound around a core—often ferrite—to achieve the desired inductance. The assembly is then encapsulated for SMD mounting. Sunlord offers types like the MWSD wire-wound ferrite inductors. 
  • Features: Typically offer higher quality factor (Q), lower DC resistance (DCR), and higher saturation current compared to multilayer types of the same size. Ideal for applications requiring high energy efficiency and current handling, such as DC/DC converters. 
  • Material: Copper wire, ferrite core, or other magnetic core materials. 

alfatec provides the most common and versatile multilayer ferrite and wire-wound chip inductors from Sunlord. 

Choose Sunlord chip inductors from alfatec and benefit from:
High Quality & Reliability: Sunlord is known for strict quality control and advanced materials and manufacturing processes.
Miniaturization: Extremely small sizes like 008004 and 01005 enable high PCB density.
Broad Product Range: Wide selection of inductance values (18.0 nH to 110 µH) and package sizes.
Optimized Performance: Multilayer ferrite inductors for RF applications and wire-wound types for power applications with excellent electrical characteristics.
Specialized Series: Access to proven Sunlord series like SDFL and MCL Ferrite Power Inductors.
Automotive Grade: Many Sunlord inductors are AEC-Q200 qualified for automotive use.
Expert Support from alfatec: We assist in selecting the right inductor and provide technical support.
Application Areas
Power Supplies: DC/DC converters (buck, boost, buck-boost), LDO filtering—typically using wire-wound types with high saturation current and low DCR.
High-Frequency Circuits: RF filters, oscillators, impedance matching in mobile phones, WLAN, Bluetooth modules—multilayer ferrite inductors are often preferred.
Automotive Electronics: Infotainment, engine control, ADAS, onboard power systems.
Signal Filtering: EMI suppression on signal and power lines—often using multilayer ferrite chip inductors as ferrite beads.
Industrial Electronics: Control systems, measurement technology, automation.
Consumer Electronics: Smartphones, tablets, laptops, wearables, cameras.
Medical Technology: Imaging systems, portable diagnostic devices.

Understanding Technical Parameters – Inductance, Impedance & More

Key parameters for selecting the right chip inductor include: 

  • Inductance (L): Measured in Henry (H), typically in nanohenries (nH) or microhenries (µH). Indicates the ability to store energy in a magnetic field. alfatec offers Sunlord inductors ranging from 18.0 nH to 110 µH. 
  • Quality Factor (Q): Indicates efficiency. A high Q means low losses - especially important in RF circuits. Wire-wound types usually have higher Q. 
  • DC Resistance (DCR): The ohmic resistance of the winding or internal conductor. Low DCR is crucial for high efficiency, especially in power supplies. 
  • Saturation Current (Isat): The DC current at which inductance drops by a defined percentage (e.g., 30%) due to magnetic core saturation. Important for power inductors in DC/DC converters. 
  • Rated Current (Irms): The maximum current that causes a defined temperature rise due to DCR. Exceeding this can lead to overheating. 
  • Self-Resonant Frequency (SRF): The frequency at which the inductor’s parasitic capacitance resonates with its inductance. Above SRF, the component behaves capacitively. 
  • Impedance (Z): The frequency-dependent AC resistance. At high frequencies, multilayer inductors are often used for EMI filtering (as ferrite beads). 

 

Our partner for SMD Chip Inductors

Logo Sunlord

Sunlord

Our partner Sunlord has been developing and producing chip-based electronic components such as EMC or RF components, coils, inductors and transformers since 2000. The company also offers development work for customised designs and has already received Tier 1 certifications for this. 

 

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See for yourself the quality and performance of our Sunlord wire-wound/multi-layer ferrite inductors. Request a non-binding quote today or download the data sheets.

alfatec – Your partner for high-quality electronic components

As a competent partner for electronic components, alfatec supports you in selecting the right wire-wound/multi-layer ferrite inductors for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.

Do you have questions about our wire-wound/multi-layer ferrite inductors or would you like a personal consultation? Feel free to contact us.