# BLM18BD102SZ1D

**Murata Electronics** · Ferrite Beads · 0603

BLM18BD102SZ1D 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 terminal of the two-terminal ferrite bead (1000 Ω ±25% impedance at 100 MHz, 200 mA rated current, 0.85 Ω max DC resistance); no polarity. |
| 2 | 2 | passive | Other terminal of the two-terminal ferrite bead (1000 Ω ±25% impedance at 100 MHz, 200 mA rated current, 0.85 Ω max DC resistance); no polarity. |

## 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 tolerance | Z | -25 |  | 25 | % | At 100 MHz (printed 1000±25%) | 3 |
| DC resistance (initial values) |  |  |  | 0.85 | Ω | Initial values | 3 |
| DC resistance (values after testing) |  |  |  | 0.95 | Ω | Values after testing | 3 |
| Operating temperature range |  | -55 |  | 125 | °C | Operating temperature range | 1 |
| Storage temperature range |  | -55 |  | 125 | °C | Storage temperature range | 1 |
| Recommended storage temperature range |  | -10 |  | 40 | °C | Recommended storage; relative humidity 15% to 85% | 12 |
| Impedance change after high temperature exposure (Table A) | Z | -30 |  | 30 | % | After 1000 h at 125°C; at 100 MHz | 5 |
| Impedance change after temperature cycling (Table B) | Z | -30 |  | 30 | % | After 1000 cycles, -55°C to +125°C; at 100 MHz | 6 |
| Impedance change after biased humidity (Table C) | Z | -30 |  | 30 | % | After 1000 h at 85°C, 85% RH, max rated current applied; at 100 MHz | 6 |
| Impedance change after operational life (Table C) | Z | -30 |  | 30 | % | After 125°C 1000 h; at 100 MHz | 6 |
| Impedance change after mechanical shock (Table D) | Z | -30 |  | 30 | % | Per MIL-STD-202 Method 213, 1500 g, 0.5 ms half sine; at 100 MHz | 6 |
| Impedance change after vibration (Table D) | Z | -30 |  | 30 | % | 5 g, 10 Hz to 2000 Hz, 20 min per orientation; at 100 MHz | 6 |
| Impedance | Z |  | 1000 |  | Ω | At 100 MHz | 3 |
| Rated current (ambient 125°C) |  |  | 200 |  | mA | Ambient temperature 125°C; derated per note *1 based on operating temperature | 3 |
| ESD rank |  |  | 2 |  | kV | ESD rank 2: 2 kV | 1 |

## CAD (KiCad official)

- Symbol: `BLM18BD102SZ1D`
- Footprint: `Inductor_SMD:L_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `blm18bd102sz1d-etched.step` / `blm18bd102sz1d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `blm18bd102sz1d.step` / `blm18bd102sz1d.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/8576164145320165376) (13 pp, sha256 `2fcdffaa59d7da2d`, retrieved 2026-11-06, 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/blm18bd102sz1d-datasheet.pdf)