# CDRH129RNP-330MC

**Sumida** · Power Inductors · SMD, 12x12mm

CDRH129RNP-330MC from Sumida, in a SMD, 12x12mm. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). The symbol is generated from that pin table and the footprint is an Adom_Gen land derived from the manufacturer drawing; the 3D model is generated to fit it.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | One terminal of the 33µH ±20% inductor (100kHz), with 39.3 mΩ max DCR, 4.00 A saturation current and 4.25 A temperature rise current. |
| 2 | 2 | passive | Other terminal of the 33µH ±20% inductor (100kHz), with 39.3 mΩ max DCR, 4.00 A saturation current and 4.25 A temperature rise current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Sumida |
| Package | SMD, 12x12mm |
| Category | Inductors, Coils, Chokes |
| 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 |
|---|---|---|---|---|---|---|---|
| Inductance |  |  | 33 |  | µH | nominal, catalog attribute (LCSC C278365) | catalog |
| Tolerance |  | -20 |  | 20 | % | catalog attribute (LCSC C278365) | catalog |
| Rated current |  |  |  | 4.25 | A | catalog attribute (LCSC C278365) | catalog |

## CAD (Adom-generated)

- Symbol: `CDRH129RNP-330MC`
- Footprint: `Adom_Gen:Sumida_CDRH129`
- 3D model: generated to fit the land (STEP)
- 3D model files: `cdrh129rnp-330mc-etched.step` / `cdrh129rnp-330mc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdrh129rnp-330mc.step` / `cdrh129rnp-330mc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Sumida datasheet](docs/cdrh129rnp-330mc-datasheet.pdf) (4 pp, sha256 `7fbceb7ac1d3e185`, retrieved 2026-10-15, 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:** symbol generated from the datasheet pin table; footprint an Adom_Gen land derived from the manufacturer drawing. 3D model generated to fit that land.

[Datasheet PDF](docs/cdrh129rnp-330mc-datasheet.pdf)