# MH1608-121Y

**BOURNS** · Ferrite Beads · 0603

MH1608-121Y from BOURNS, 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 | First terminal electrode of the ferrite bead (Ag/Ni/Sn); 120 Ω ±25 % at 100 MHz, 100 mΩ max RDC, 2.0 A max IDC. |
| 2 | 2 | passive | Second terminal electrode of the ferrite bead (Ag/Ni/Sn); interchangeable with the first, non-polarized, rated -55 °C to +125 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 0603 |
| Category | Filters |
| Pins | 2 |

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Impedance | Z |  | 120 |  | Ω | at 100 MHz, catalog attribute (LCSC C2650949) | catalog |
| Tolerance |  | -25 |  | 25 | % | catalog attribute (LCSC C2650949) | catalog |
| Rated current |  |  |  | 2 | A | catalog attribute (LCSC C2650949) | catalog |
| Operating temperature |  | -55 |  | 125 | °C | catalog description (LCSC C2650949) | catalog |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | Terminal....................................Ag/Ni/Sn Materials | 1 |

## CAD (KiCad official)

- Symbol: `MH1608-121Y`
- Footprint: `Inductor_SMD:L_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `mh1608-121y-etched.step` / `mh1608-121y-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mh1608-121y.step` / `mh1608-121y.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839691823546368) (6 pp, sha256 `f3f3d6673d40c3d4`, 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/mh1608-121y-datasheet.pdf)