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47 Ω Ferrite Bead 0402 - Murata BLM15BA470SN1D

Public Made by Adom Basic Part

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0402 Ferrite Bead · 47 Ω @ 100 MHz · 200 mA

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John Lauer Pads: square corners, as the datasheet draws them (no added rounding); viewers, lbr, insertion GLB, hero rebuilt from t… fcdcf40 23d ago

47 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).

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