component
BLM18DN221SZ1D
Public Made by Adomby adom
Murata Electronics Ferrite Beads, 0603. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBLM18DN221SZ1D
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);blm18dn221sz1d.step/blm18dn221sz1d.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).