by adom
0402 Ferrite Bead · 47 Ω @ 100 MHz · 200 mA
3D Model
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README
markdown47 Ω Ferrite Bead 0402 - Murata BLM15BA470SN1D
Murata BLM15BA470SN1D: 0402 Ferrite Bead, 47 Ω @ 100 MHz, 200 mA. An Adom Basic Part: Adom keeps it on reels for its pick-and-place line, so boards built with it draw on Adom stock.
Key specs
| Spec | Datasheet |
|---|---|
| 0402 chip ferrite bead, BLM15_SN series, 1.0 × 0.5 × 0.5 mm, 0.25 mm end electrodes, 0.001 g, no marking | p.4 |
| Impedance 47 Ω ±25% typical at 100 MHz (measured 100 MHz ±1 MHz, Keysight 4291A with 16192A fixture) | p.2, p.4 |
| Grouped “For high speed signal line” in the series rating table | p.2 |
| Rated current 200 mA, and unmarked by the *1 flag, so the 85 → 125 °C derating curve applied to power-line members does not apply | p.2, p.3 |
| DC resistance 0.60 Ω max initial, 0.65 Ω max after testing | p.2 |
| Operating and storage range −55 to +125 °C | p.3 |
| Equivalent circuit is L in series with R, the resistance element becomes dominant at high frequencies, so noise is dissipated rather than reflected | p.4 |
| 8 mm paper tape at 2 mm pitch, 10,000 pcs per reel | p.6 |
Notes for designers
BLM15BA470SN1D is a 0402 chip ferrite bead from Murata's BLM15 SN series, filed in the rating table under “for high speed signal line”. (p.2) Its label value is 47 Ω ±25% at 100 MHz (p.2), an impedance at one spot frequency, not a resistance, and the equivalent circuit note explains the useful part: at high frequency the resistive element dominates, so RF noise is burned off as heat instead of being reflected back down the line. (p.4)
The DC-side numbers are the ones that bite. DC resistance is allowed up to 0.60 Ω initially (0.65 Ω after environmental testing) (p.2) and the rated current is just 200 mA (p.2), fine in series with a signal or a lightly-loaded supply pin, wrong for a power rail. Within those limits it works from −55 to +125 °C with no derating note attached to its table row. (p.3) It ships 10,000 to an 8 mm paper-tape reel. (p.6)
Footprint
Redrawn from the datasheet land pattern (the previous pads were off by up to 0.2 mm).
Source: Land pattern from Murata reference specification JENF243A-0018AJ-01 (BLM15 SN series), p.7 (Land pattern designing, standard land dimensions (reflow)).
| mm | Datasheet | KiCad standard (L_0402_1005Metric) | Previous | This page |
|---|---|---|---|---|
| Pad length (along the part) | 0.4 to 0.5 | 0.59 | 0.6 | 0.45 |
| Pad width | 0.5 | 0.64 | 0.5 | 0.5 |
| Gap between pads | 0.4 | 0.38 | 0.4 | 0.4 |
| Centre to centre | 0.8 to 0.9 | 0.97 | 1 | 0.85 |
| Overall | 1.2 to 1.4 | 1.56 | 1.6 | 1.3 |
| Corner radius | not specified | 0.1475 (ratio 0.25) | 0.125 (ratio 0.25) | square (as drawn) |
| Corners: square, as the datasheet draws them. The datasheet does not call for rounded corners, so the footprint does not add any. |
Chip outline
The part's 3D outline in the standard pose (pad 1 toward the viewer), drawn from the STEP by Adom's OpenCascade service; the part number sits where the laser-etched mark is on the 3D model and reads the same way.
Symbol options
The default symbol, BLM15BA470SN1D.kicad_sym (the one in the Symbol & Footprint panel), is the plain standard symbol. BLM15BA470SN1D-outline.kicad_sym is the same symbol with the part's 3D chip outline drawn beside it, its part number placed and reading as on the 3D model.
Ordering
| MPN | BLM15BA470SN1D |
| Manufacturer | Murata |
| Adom stock | Adom Basic Part, stocked on reels for Adom's pick-and-place line; reel counts on pnp-inventory |
| Other sources | adom-parts-search compares Mouser, DigiKey and JLCPCB |
Downloads
| File | What it is |
|---|---|
| BLM15BA470SN1D.kicad_sym | KiCad symbol (standard symbol, the page default) |
| BLM15BA470SN1D-outline.kicad_sym | KiCad symbol with the 3D chip outline |
| BLM15BA470SN1D.kicad_mod | KiCad footprint (datasheet land pattern) |
| BLM15BA470SN1D.step | 3D STEP with the part number laser-etched (default) |
| BLM15BA470SN1D-unetched.step | 3D STEP, bare (no mark) |
| BLM15BA470SN1D.glb | 3D GLB of the etched model (board use) |
| BLM15BA470SN1D-unetched.glb | 3D GLB, bare |
| BLM15BA470SN1D.lbr | Fusion 360 / EAGLE library |
| BLM15BA470SN1D.adom-lbr.json | adom-lbr part (converts to Altium, KiCad, EAGLE) |
| BLM15BA470SN1D-datasheet.pdf | Datasheet (release asset) |
Provenance
- Datasheet: Chip Ferrite Bead BLM15□□□□□SN1□ REFERENCE SPECIFICATION, JENF243A-0018AJ-01 revised Revision carried only in the spec-number suffix 'AJ-01'; no printed issue/revision date anywhere in the doc, Murata Manufacturing Co., Ltd. (footer 'MURATA MFG.CO.,LTD.' on every page).
md5 945ade57f71f3915a01f8d1fbab43eac - Footprint: Land pattern from Murata reference specification JENF243A-0018AJ-01 (BLM15 SN series), p.7 (Land pattern designing, standard land dimensions (reflow)). Pads redrawn on 2026-10-03.
- 3D model and symbol: unchanged by the footprint pass; the etched STEP adds a flat virtual part-number mark (an identification aid, not the maker's marking).
More
- Datasheet pages: the 11 datasheet pages as images.
- Assembly animation: the part dropping onto its pads, and Adom's pick-and-place picking it from tape.
Symbol & Footprint
Schematic Symbol
Open full view ↗PCB Footprint
Open full view ↗Datasheet
Datasheet (rendered from Markdown)
BLM15BA470SN1D datasheet
Chip Ferrite Bead BLM15□□□□□SN1□ REFERENCE SPECIFICATION, JENF243A-0018AJ-01 revised Revision carried only in the spec-number suffix 'AJ-01'; no printed issue/revision date anywhere in the doc, Murata Manufacturing Co., Ltd. (footer 'MURATA MFG.CO.,LTD.' on every page).
