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BLM18DN221SZ1D

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Murata Electronics Ferrite Beads, 0603. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BLM18DN221SZ1D

Murata Electronics · Ferrite Beads · 0603

BLM18DN221SZ1D from Murata Electronics, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1 passive First electrode of the single-circuit ferrite bead, which is non-polarized and rated 1A at 85°C and 650mA at 125°C with 0.21Ω max DC resistance.
2 2 passive Second electrode of the single-circuit ferrite bead, which has 220Ω ±25% impedance at 100MHz and 650Ω ±30% at 1GHz.

Key specifications

Parameter Value
Manufacturer Murata Electronics
Package 0603
Category Filters
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
DC Resistance (max.) 0.21 Ω 2
Impedance (at 100MHz) Tolerance -25 25 % at 100MHz 2
Impedance (at 1GHz) Tolerance -30 30 % at 1GHz 2
Operating Temperature Range -55 125 ℃ 2
Length Tolerance (nominal 1.6mm) -0.15 0.15 mm 2
Width Tolerance (nominal 0.8mm) -0.15 0.15 mm 2
Thickness Tolerance (nominal 0.8mm) -0.15 0.15 mm 2
Impedance (at 100MHz) 220 Ω at 100MHz 2
Impedance (at 1GHz) 650 Ω at 1GHz 2
Rated Current 1 A at 85℃ 2
Rated Current 650 mA at 125℃ 2
Length 1.6 mm 2
Width 0.8 mm 2
Thickness 0.8 mm 2

CAD (KiCad official)

  • Symbol: BLM18DN221SZ1D
  • Footprint: Inductor_SMD:L_0603_1608Metric
  • 3D model: 0603 (KiCad packages3D, STEP)
  • 3D model files: blm18dn221sz1d-etched.step / blm18dn221sz1d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); blm18dn221sz1d.step / blm18dn221sz1d.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Murata Electronics datasheet (3 pp, sha256 c2f1bf0b9279f08a, retrieved 2026-11-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF