# FBC1608-121Y

**Linekey** · Ferrite Beads · 0603

FBC1608-121Y from Linekey, 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 | Terminal electrode at one end of the 1.6±0.15 mm ferrite bead body (120 Ω ±25% at 100 MHz, 0.20 Ω max DCR, 1.00 A max); the bead is non-polarized. |
| 2 | 2 | passive | Terminal electrode at the opposite end of the ferrite bead body, interchangeable with the other terminal (120 Ω ±25% at 100 MHz, 0.20 Ω max DCR, 1.00 A max). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Linekey |
| Package | 0603 |
| Category | Bead/Filter/EMI Optimization |
| 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 |  | -25 |  | 25 | % | Printed tolerance ±25% (FBC1608-121Y) | 4 |
| DC resistance (DCR) max |  |  |  | 0.2 | Ω |  | 4 |
| Rated current (current max) |  |  |  | 1 | A | Rated current: temperature rise not more than 30°C (Note 1) | 4 |
| Operating temperature range |  | -55 |  | 125 | °C | Including self-temperature rise | 1 |
| Impedance (nominal) |  |  | 120 |  | Ω | Measured at test frequency 100 MHz | 4 |

## CAD (KiCad official)

- Symbol: `FBC1608-121Y`
- Footprint: `Inductor_SMD:L_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `fbc1608-121y-etched.step` / `fbc1608-121y-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fbc1608-121y.step` / `fbc1608-121y.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Linekey datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836311864909824) (9 pp, sha256 `c9f592b490b33b38`, retrieved 2026-10-18, 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/fbc1608-121y-datasheet.pdf)