component
BLM21BB121SN1D
Public Made by Adomby adom
Murata Electronics Ferrite Beads, 0805. 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
markdownBLM21BB121SN1D
Murata Electronics · Ferrite Beads · 0805
BLM21BB121SN1D from Murata Electronics, in a 0805. 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 | One of two interchangeable electrodes of the chip ferrite bead (120 ohm ±25% at 100MHz, 600 mA rated, 0.19 ohm max DC resistance). |
| 2 | 2 | passive | Second interchangeable electrode of the chip ferrite bead, in series with the inductive/resistive element shown in the equivalent circuit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Murata Electronics |
| Package | 0805 |
| Category | Filters |
| Pins | 2 |
Electrical characteristics
Limits from the LCSC catalog entry for this part (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Impedance | Z | 120 | Ω | at 100 MHz, catalog attribute (LCSC C23568) | catalog | ||
| Tolerance | -25 | 25 | % | catalog attribute (LCSC C23568) | catalog | ||
| Rated current | 600 | mA | catalog attribute (LCSC C23568) | catalog |
CAD (KiCad official)
- Symbol:
BLM21BB121SN1D - Footprint:
Inductor_SMD:L_0805_2012Metric - 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files:
blm21bb121sn1d-etched.step/blm21bb121sn1d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);blm21bb121sn1d.step/blm21bb121sn1d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Murata Electronics datasheet (10 pp, sha256
8fcd671d7dee7a4d, retrieved 2026-10-23, 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).