# BLM18HE102SN1D

**Murata Electronics** · Ferrite Beads · 0603

BLM18HE102SN1D 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 | One electrode of the single-circuit chip ferrite bead, with 1000 ohm ±25% impedance at 100MHz, 500 ohm min. at 1GHz, and rated current 1000mA at 85°C and 500mA at 125°C. |
| 2 | 2 | passive | Other electrode of the chip ferrite bead, with DC resistance 0.35 ohm max. initially and 0.40 ohm max. after testing, interchangeable with the other terminal. |

## 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 |
|---|---|---|---|---|---|---|---|
| Impedance at 1 GHz (minimum) | Z | 500 |  |  | Ω | at 1GHz (column assignment to be confirmed) | 1 |
| DC resistance (initial values, max.) | DCR |  |  | 0.35 | Ω | Initial values | 1 |
| DC resistance (after testing, max.) | DCR |  |  | 0.4 | Ω | After testing | 1 |
| Impedance change after reliability tests (BLM18HE) |  | -40 |  | 40 | % |  | 4 |
| Operating temperature |  | -55 |  | 125 | °C |  | 1 |
| Impedance at 100 MHz (nominal) | Z |  | 1000 |  | Ω | at 100MHz | 1 |
| Impedance tolerance |  | -25 |  | 25 | % |  | 1 |
| Rated current at 85°C (derated per *1) |  |  | 1000 |  | mA | at 85°C; footnote *1 derating applies | 1 |
| Rated current at 125°C (derated per *1) |  |  | 600 |  | mA | at 125°C; footnote *1 derating applies | 1 |

## CAD (KiCad official)

- Symbol: `BLM18HE102SN1D`
- Footprint: `Inductor_SMD:L_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `blm18he102sn1d-etched.step` / `blm18he102sn1d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `blm18he102sn1d.step` / `blm18he102sn1d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Murata Electronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175836282368000) (8 pp, sha256 `b4321f941ffe0566`, retrieved 2026-10-19, 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](docs/blm18he102sn1d-datasheet.pdf)