# MMZ2012Y202BTD25

**TDK** · Ferrite Beads · 0805

MMZ2012Y202BTD25 from TDK, in a 0805. 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 chip bead (2.0x1.25x0.85 mm body, 0.5±0.3 mm terminal electrode); rated current 400 mA max, DC resistance 0.50 Ω max, impedance 2000 Ω ±25% at 100 MHz. |
| 2 | 2 | passive | Other terminal of the chip bead (non-polarized, interchangeable with pin 1); recommended land pad 0.8 x 1.2 mm with 1 mm gap between pads. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDK |
| Package | 0805 |
| 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 (nominal, at 100 MHz) | Z |  | 2000 |  | Ω | at 100MHz | 2 |
| Impedance tolerance |  | -25 |  | 25 | % |  | 2 |
| DC resistance |  |  |  | 0.5 | Ω |  | 2 |
| Rated current |  |  |  | 400 | mA |  | 2 |
| Operating temperature range |  | -55 |  | 125 | °C |  | 6 |
| Storage temperature range |  | -55 |  | 125 | °C | storage range; the datasheet notes it applies after the part is fixed to the board | 6 |

## CAD (KiCad official)

- Symbol: `MMZ2012Y202BTD25`
- Footprint: `Inductor_SMD:L_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `mmz2012y202btd25-etched.step` / `mmz2012y202btd25-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmz2012y202btd25.step` / `mmz2012y202btd25.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TDK datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911983949729792) (7 pp, sha256 `5547e95740b59905`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/mmz2012y202btd25-datasheet.pdf)