The BLM18EG221SN1D is a high-performance SMD ferrite bead manufactured by Murata Manufacturing Co., Ltd. Belonging to the EMIFIL BLM18EG series, this chip ferrite bead features an impedance of 220Ω at 100MHz, an impedance tolerance of ±25%, and a rated current of 2A, providing an effective solution for high-frequency noise suppression and electromagnetic interference (EMI) filtering in electronic circuits.
Designed in a compact 0603 (1608 Metric) package, the BLM18EG221SN1D supports high-density PCB layouts and automated surface-mount assembly. With a maximum initial DC resistance of 50mΩ, it helps minimize voltage drops and power losses while suppressing unwanted high-frequency noise in power and signal lines.
The device operates over a temperature range of -55°C to +125°C. Its rated current is 2A at ambient temperatures up to 85°C and decreases to 1A at 125°C, making it suitable for applications requiring reliable EMI suppression under specified operating conditions.
The BLM18EG series features impedance characteristics optimized for high-frequency noise suppression. Its resistive impedance behavior at high frequencies helps absorb unwanted noise energy and reduce electromagnetic interference.
Key Features:
- Manufacturer: Murata Manufacturing Co., Ltd.
- Part Number: BLM18EG221SN1D
- Product Series: EMIFIL BLM18EG Series
- Product Category: Ferrite Beads and Chips
- Product Type: SMD Ferrite Bead
- Filter Type: Power and Signal Line EMI Suppression
- Impedance: 220Ω at 100MHz
- Impedance Tolerance: ±25%
- Typical Impedance at 1GHz: 260Ω
- Rated Current: 2A (up to 85°C)
- Derated Current: 1A at 125°C
- Maximum Initial DC Resistance (DCR): 50mΩ
- Package Size: 0603 (1608 Metric)
- Dimensions: 1.6 × 0.8 × 0.8mm (Nominal)
- Operating Temperature: -55°C to +125°C
- Number of Circuits: 1
- Polarity: Non-Polarized
- Mounting Type: Surface Mount (SMD/SMT)
- Packaging: Paper Tape and Reel
- Standard Reel Quantity: 4,000 Pieces
- RoHS Compliance: RoHS Compliant
Typical Applications:
- EMI and high-frequency noise suppression
- Power supply noise filtering
- Consumer electronic devices
- Industrial automation and control systems
- Communication and networking equipment
- Digital signal and control circuits
- Embedded electronic systems
- High-density PCB assemblies
The Murata BLM18EG221SN1D combines effective high-frequency noise suppression, low DC resistance, and a compact 0603 package to provide reliable EMI filtering performance for modern electronic systems.
Its 220Ω impedance at 100MHz, 2A rated current capability, and compatibility with automated SMT assembly make it a practical choice for electronic manufacturers, design engineers, and component procurement professionals seeking space-efficient noise suppression solutions.
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