# CSR0204FTDV4991

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

CSR0204FTDV4991 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 | Electrode cap at one end of the CSR0204 metal film resistor (L 3.50±0.20 mm, ΦD 1.40±0.15 mm), rated 1/4W at 70°C, max operating voltage 200V and max overload voltage 400V. |
| 2 | 2 | passive | Electrode cap at the opposite end of the CSR0204 resistor, non-polarized and interchangeable with the other terminal, with operating temperature range -55 to +155°C. |

## 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 |
|---|---|---|---|---|---|---|---|
| Tolerance |  | -1 |  | 1 | % | catalog description (LCSC C489403) | catalog |
| Resistance |  |  | 4.99 |  | kΩ | nominal, catalog description (LCSC C489403) | catalog |
| Temperature coefficient | TCR | -50 |  | 50 | ppm/°C | catalog description (LCSC C489403) | catalog |
| Operating temperature |  | -55 |  | 155 | °C | catalog description (LCSC C489403) | catalog |

## CAD (KiCad official)

- Symbol: `CSR0204FTDV4991`
- 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/8590909586901979136) (12 pp, sha256 `4dfa81da022acdff`, retrieved 2026-10-12, 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/csr0204ftdv4991-datasheet.pdf)