# ACMS201209A1021A

**HYHONGYEX** · Ferrite Beads · 0805

ACMS201209A1021A from HYHONGYEX, 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 | Terminal 1 of an unpolarised inductor or ferrite bead; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised inductor or ferrite bead; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HYHONGYEX |
| 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 tolerance | /Z/ | -25 |  | 25 | % |  | 11 |
| Max. DC resistance | DCR |  |  | 0.3 | Ω | Max. DC resistance | 11 |
| Max. rated current | Ir |  |  | 1000 | mA | Max. rated current | 11 |
| Operating temperature range |  | -40 |  | 85 | °C |  | 4 |
| Storage temperature (maximum) |  |  |  | 40 | °C | Storage, ≤70% RH | 8 |
| Reflow preheat temperature difference (solder to ferrite surface) |  |  |  | 150 | °C | Reflow preheat, max | 8 |
| Soldering iron tip temperature (rework) |  |  |  | 280 | °C | Rework with soldering iron, once only | 9 |
| Soldering time (rework) |  |  |  | 3 | s | Rework with soldering iron, max | 9 |
| Soldering iron output power (rework) |  |  |  | 30 | W | Rework with soldering iron, max | 9 |
| Impedance | /Z/ |  | 1000 |  | Ω | Test frequency 100 MHz | 11 |

## 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 |
|---|---|---|---|---|
| housing | 尼龙 |  | a. 卷盘和干燥剂一同放入尼龙或塑料袋中。Reel and a bag of desiccant shall be packed in Nylon or plastic bag. | 7 |

## CAD (KiCad official)

- Symbol: `ACMS201209A1021A`
- Footprint: `Inductor_SMD:L_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `acms201209a1021a-etched.step` / `acms201209a1021a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `acms201209a1021a.step` / `acms201209a1021a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HYHONGYEX datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590168489920540672) (12 pp, sha256 `581a2e2cd9c78837`, retrieved 2026-10-17, 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`, primary `two-terminal convention` (convention), consensus `off` (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/acms201209a1021a-datasheet.pdf)