Limited Stock

Murata BLM18SG121TN1D 120 Ohm 3A 0603 SMD Ferrite Beads EMI Filters 50pcs

Ferrite Beads / EMI Suppression • SKU RFB00444

$4.95

50-piece pack of genuine Murata BLM18SG121TN1D surface-mount ferrite chip beads for EMI and high-frequency noise suppression.

The BLM18SG121TN1D provides 120 ohms impedance at 100MHz in a compact 0603 / 1608 metric SMD package. This part is designed for power-line noise suppression and combines low DC resistance with a high current capability of up to 3A.

Ferrite beads are commonly placed in power and signal paths to suppress unwanted high-frequency noise while allowing normal DC current to pass. These components are useful for radio and RF equipment, communications electronics, digital circuits, power supplies, control boards, audio equipment, test equipment, computer electronics, and other assemblies where EMI or RF noise suppression is required.

SPECIFICATIONS:
Impedance: 120 ohms at 100MHz
Impedance Tolerance: ±25%
Rated Current: 3A at 85°C
Rated Current: 1A at 125°C
Maximum DC Resistance: 0.025 ohm / 25mOhm
Package: 0603 / 1608 Metric
Nominal Size: 1.6mm x 0.8mm x 0.5mm
Mounting: Surface Mount / SMD / SMT
Type: Chip Ferrite Bead
Number of Lines: 1
Application: EMI / RF Noise Suppression
Operating Temperature: -55°C to +125°C
Quantity Supplied: 50 pieces

HISTORICAL:
Murata Manufacturing traces its beginnings to Kyoto, Japan in 1944, when founder Akira Murata established a small factory producing titanium-oxide ceramic capacitors. Murata grew alongside the postwar electronics industry and became one of Japan's major manufacturers of advanced passive electronic components used in radio, communications, industrial, consumer, automotive, and other electronic equipment.

As electronic equipment became smaller and digital circuitry operated at increasingly higher frequencies, controlling electromagnetic interference became much more important. Surface-mount ferrite beads emerged as a compact way to suppress high-frequency noise on circuit-board power and signal lines without adding the size of traditional wound inductors.

Murata's BLM series was developed as a family of chip ferrite beads specifically intended for electronic noise suppression. The BLM18 family uses the widely adopted 0603 / 1608 metric footprint, allowing effective EMI filtering in densely populated surface-mount assemblies.

The BLM18S series was designed specifically with low DC resistance and higher current capability, making parts such as the BLM18SG121TN1D particularly useful in DC power-line noise suppression. Its combination of a miniature 0603 package, 120-ohm impedance at 100MHz, low 25mOhm maximum DC resistance, and 3A current capability represents the continuing evolution of ferrite suppression components for increasingly compact electronic equipment.

RF Boneyard preserves and repackages genuine electronic components like these into practical quantities for repair technicians, electronics shops, builders, restorers, ham radio and RF technicians, audio technicians, experimenters, and anyone repairing or maintaining electronic equipment without needing a full production reel.