The BLM18EG121SN1D 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 120Ω 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 BLM18EG121SN1D supports high-density PCB layouts and automated surface-mount assembly. With a maximum DC resistance of 40mΩ, it helps minimize voltage drops and power losses while suppressing unwanted high-frequency noise.
Its operating temperature range of -55°C to +125°C makes it suitable for consumer electronics, industrial control systems, communication equipment, and various electronic power and signal circuits.
Key Features:
- Manufacturer: Murata Manufacturing Co., Ltd.
- Part Number: BLM18EG121SN1D
- Product Series: EMIFIL BLM18EG Series
- Product Type: SMD Ferrite Bead
- Impedance: 120Ω at 100MHz
- Impedance Tolerance: ±25%
- Typical Impedance at 1GHz: 145Ω
- Rated Current: 2A (up to 85°C)
- Maximum DC Resistance (DCR): 40mΩ
- Package Size: 0603 (1608 Metric)
- Dimensions: 1.6 × 0.8 × 0.8mm (Nominal)
- Operating Temperature: -55°C to +125°C
- Number of Circuits: 1
- Mounting Type: Surface Mount (SMD/SMT)
- Packaging: 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
- High-density PCB assemblies
The Murata BLM18EG121SN1D combines high-frequency impedance characteristics, low DC resistance, and a compact 0603 package to provide reliable EMI suppression for modern electronic systems.
Its 2A current capability and efficient surface-mount design make it a practical choice for electronic manufacturers, design engineers, and component procurement professionals seeking effective noise filtering solutions.
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