The LB2518T221K from TAIYO YUDEN is an LB-series wire-wound ferrite chip inductor featuring a nominal inductance of 220μH, an inductance tolerance of ±10%, and a maximum rated DC current of 40mA. It is designed for noise suppression, filtering, and general inductive functions on DC power lines.
The component has a typical DC resistance of 4.5Ω and a specified maximum DC resistance of 5.85Ω. Its minimum self-resonant frequency is 5.5MHz, and inductance is measured at 0.796MHz. The rated current is defined as the maximum DC current that keeps inductance reduction within 10% and self-temperature rise within 20°C.
LB2518T221K is supplied in a 1007-inch／2518-metric surface-mount package measuring approximately 2.5 × 1.8 × 1.8mm. Its operating-temperature range is −40°C to +105°C, including temperature rise caused by the component itself.
The device is compatible with lead-free reflow soldering, complies with RoHS and REACH requirements, and is halogen-free. It is supplied on embossed tape and reel, with a standard quantity of 2,000 units per reel.
TAIYO YUDEN has renamed the LB2518T221K. The recommended replacement part number for general electronic equipment is LSQBA251818T221K. New designs and volume purchases should also verify the availability and documentation of the replacement part number.
Key Specifications:
- Manufacturer: TAIYO YUDEN
- Manufacturer Part Number: LB2518T221K
- Recommended New Part Number: LSQBA251818T221K
- Product Series: LB
- Component Type: Wire-Wound Ferrite Chip Inductor
- Nominal Inductance: 220μH
- Inductance Tolerance: ±10%
- Maximum Rated Current: 40mA
- Typical DC Resistance: 4.5Ω
- Maximum DC Resistance: 5.85Ω
- Minimum Self-Resonant Frequency: 5.5MHz
- Inductance Test Frequency: 0.796MHz
- Temperature Characteristic: ±20% Inductance Change
- Operating Temperature: −40°C to +105°C
- Package Size: 1007 Inch／2518 Metric
- Dimensions: 2.5±0.2 × 1.8±0.2 × 1.8±0.2mm
- Mounting Type: Surface Mount
- Soldering Method: Reflow
- Packaging: Embossed Tape and Reel
- Standard Reel Quantity: 2,000 Units
- Compliance: RoHS, REACH, and Halogen-Free
Typical Applications:
Suitable for DC-line noise suppression and filtering in digital cameras, video cameras, hard-disk equipment, LCD televisions, mobile devices, computers, gaming equipment, and communication systems. DC-bias effects, inductance reduction, DCR, operating frequency, and temperature rise should be evaluated in the final design.
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