SMD Type Series
Here you will find our selection of series for SMD types.
Discover nowCeramic Multilayer Inductors: Compact RF Performance
Reliable passive components are key to success in modern electronics development. Especially in the high-frequency (RF) domain, the search for high-performance and space-saving components is challenging. alfatec GmbH & Co. KG supports you as a competent partner with years of experience in high-quality electronic components and helps you find the right solution.
Our portfolio includes a wide range of inductors - including multilayer ceramic inductors (MLCI) from our renowned partner Sunlord. These components stand out for their compact design and excellent performance, making them ideal for demanding applications.
Multilayer Inductors: What Defines Ceramic Multilayer Inductors?
Multilayer ceramic inductors - often referred to as MLCIs - belong to the category of surface-mount device (SMD) inductors. Their structure is based on multilayer technology, similar to that of MLCCs (Multilayer Ceramic Capacitors), but optimized for inductance. Conductive coil patterns - typically made of silver or copper - are printed onto thin ceramic or ferrite-based dielectric layers. These layers are stacked, pressed, and sintered at high temperatures to form a monolithic structure.
In contrast, wire-wound inductors use a wire wound around a core (e.g., ferrite or ceramic). While wire-wound types often offer higher quality factors (Q) and saturation currents, ceramic multilayer inductors offer:
- Extremely compact form factors
- Excellent suitability for high frequencies
- Good temperature stability
- Cost-efficiency in high-volume production
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Technical Parameters & Construction Types: A Closer Look
When selecting the right inductor, several technical parameters are critical:
- Inductance (L): Nominal value measured in nanohenries (nH) or microhenries (µH), indicating the ability to store energy in a magnetic field. alfatec covers the range from 0.2 nH to 680 nH.
- Quality factor (Q): A measure of inductor efficiency. A high Q means low losses, especially important in RF circuits.
- Self-resonant frequency (SRF): The frequency at which the inductor’s parasitic capacitance resonates with its inductance. Above the SRF, the component behaves capacitively. MLCIs typically have high SRFs.
- DC resistance (DCR): The ohmic resistance of internal conductors. A low DCR minimizes power loss, especially relevant for higher currents (e.g., in DC/DC converters).
- Rated current: The maximum continuous current (typically DC) the inductor can carry without overheating or significant inductance change—up to 1000 mA in our portfolio.
Construction types compared:
- Multilayer Ceramic Inductors (MLCI): Ideal for RF filtering, impedance matching, and decoupling in space-constrained applications. The multilayer structure enables ultra-compact sizes.
- Wire-wound inductors: Often preferred for higher inductance values, higher currents, and higher Q factors, typically in larger packages.
Our partner for Multi Layer Ceramic Inductors
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.
alfatec portfolio: Sunlord multilayer ceramic inductors in focus
alfatec relies on Sunlord's proven quality and technological leadership. We offer a comprehensive selection of Sunlord multilayer inductors that have been specially developed for the needs of demanding circuits.
Key technical data of our offering:
- Designs: Standardized EIA sizes—such as 0201, 0402, 0603—for easy integration.
- Inductance range: Precise values from 0.2 nH to 680 nH.
- Current carrying capacity: Suitable for currents up to 1000 mA – depending on type and size.
- Operating temperature: Wide range for reliable use even under demanding conditions – the exact specifications can be found in the data sheet.
- Materials: High-quality ceramic and ferrite materials for optimal RF properties.
We carry both high-frequency (HF) ceramic inductors and power inductors in multilayer technology from Sunlord to meet your specific requirements for inductance, quality factor (Q), self-resonant frequency (SRF), and direct current resistance (DCR).
Why alfatec GmbH & Co. KG Is Your Partner for Inductors
alfatec is more than just a distributor. We understand the technical challenges of our customers - from engineers and technicians to strategic purchasers.
- Technical expertise: Our team supports you in selecting the optimal inductor
- Strong partnerships: Close collaboration with leading manufacturers like Sunlord gives you access to the latest technology
- Reliable logistics: We ensure on-time delivery for your production planning
- Comprehensive portfolio: In addition to multilayer inductors, we also offer wire-wound inductors, ceramic capacitors (MLCCs), and other passive and active components
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See for yourself the quality and performance of our ceramic inductors. Request a non-binding quote today or download the data sheets.
alfatec – your partner for high-quality electronic components
As your expert partner for electronic components, alfatec supports you in selecting the right ceramic 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 ceramic inductors or would you like a personal consultation? Feel free to contact us.