# CSR0204DTDV4221

**Viking Tech** · Chip Resistor - Surface Mount · MELF-0204

CSR0204DTDV4221 from Viking Tech, in a MELF-0204. 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 resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Viking Tech |
| Package | MELF-0204 |
| Category | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 4.22 |  | kΩ | nominal, catalog attribute (LCSC C489402) | catalog |
| Tolerance |  | -0.5 |  | 0.5 | % | catalog attribute (LCSC C489402) | catalog |
| Rated power |  |  |  | 250 | mW | catalog attribute (LCSC C489402) | catalog |
| Temperature coefficient | TCR | -50 |  | 50 | ppm/°C | catalog description (LCSC C489402) | catalog |
| Operating temperature |  | -55 |  | 155 | °C | catalog description (LCSC C489402) | catalog |

## CAD (KiCad official)

- Symbol: `CSR0204DTDV4221`
- Footprint: `Resistor_SMD:R_MiniMELF_MMA-0204`
- 3D model: MELF-0204 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Viking Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590166726886526976) (12 pp, sha256 `4dfa81da022acdff`, retrieved 2026-10-26, tier: lcsc)
- **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/csr0204dtdv4221-datasheet.pdf)