Ferrite Power Inductor
LSQPB and LCQPB Series
Product Overview
TAIYO YUDEN’s LSQPB Series and LCQPB Series brings a new level of efficiency, reliability, and cost performance to decoupling applications in automotive, industrial, and high‑density electronics. Built on a refined wire‑wound ferrite structure, the LSQPB Series and LCQPB Series delivers higher current while lowering DC resistance, and achieves significant cost reduction compared to conventional molded inductors—all while maintaining a compact footprint and drop‑in land pattern compatibility.
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Designed to meet the rigorous demands of modern power systems, the LCQPB Series is qualified to AEC‑Q200, ensuring stable operation across harsh environments and long‑term use such as automotive systems. Its optimized internal structure minimizes dead space and eliminates unnecessary components, enabling both high performance and manufacturing efficiency.
With improved EMI characteristics through controlled winding direction and magnetic flux design, the LSQPB Series and LCQPB Series provides clean, stable power for noise‑sensitive circuits—making it an ideal choice for advanced consumer devices, optical communication equipment for AI data centers, industrial systems, ECUs, ADAS modules, power modules, compact embedded systems and more.
Product Features
LSQPB Series and LCQPB Series is wire-wound type, ferrite power inductors:
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High Current Capability: Handles approximately 2×* higher current than comparable molded inductors.
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Low DC Resistance (DCR): Achieves about 53%* lower DCR than molded equivalents.
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Cost-Optimized Structure: Simplified internal construction reduces “dead space” and unnecessary frame components, lowering manufacturing cost while maintaining performance.
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Smaller Footprint with Same Land Pattern: Drop-in replacement possible due to compatible land pattern.
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Improved EMI Characteristics: Optimized winding direction and magnetic flux control reduce electromagnetic interference, stabilizing decoupling performance in noise‑sensitive circuits.
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Automotive-Grade Reliability (LCQPB Series): Compliant with AEC Q200, making it ideal for rigorous applications.
* Specifications appliable to LCQPB Series.
Product Introduction (download): LCQPB Series
Specification
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Inductance: 0.2 uH to 100 uH
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Case Size: 1.6 mm x 0.8 mm to 3.2 mm x 2.5 mm
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Thickness: 0.7 mm to 2.0 mm
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Sat Current (max): 0.085 A to 4.5 A
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Rdc (max): 28.6 mohm to 10.01 ohm
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Temp. Range: -40 to +105 ℃
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Product Details, Specifications: LSQPB Series (TY-Compas)
Applications
The main target application for LSQPB Series and LCQPB Series is decoupling circuits, such as power line noise suppression and local power stabilization for ICs.
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Optical Communication Equipment for AI Data Centers
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LSQPB series is suitable for power supply circuits in optical communication equipment for AI data centers. Featuring low-loss characteristics compatible with high-frequency operations, these inductors improve efficiency and reduce noise in DC-DC converters within optical transceivers and optical interconnect modules. This contributes to a stable power supply that supports high-capacity data communications.​
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Key Applications
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800G/1.6T optical transceivers for AI data centers
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Optical interconnect modules
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InfiniBand Optical Transceivers
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Ethernet Optical Transceivers
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Optical Communication Equipment​​
TAIYO YUDEN Optical Transceiver Solutions for AI Server (download)
Product Video (LCQPB Series)
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The names of series noted in the text are excerpted from part numbers that indicate the types and characteristics of the products, and therefore are neither product names nor trademarks.
