# TPAL0220F10R0K9

**RESI** · Through Hole Resistors · TO-220

TPAL0220F10R0K9 from RESI, in a TO-220. 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 | Resistor terminal 1 of a non-inductive 10 Ohm thick-film power resistor (0.5 to 10K Ohm series range), max working voltage 500V, 2000VAC insulation to the flange. |
| 2 | 2 | passive | Resistor terminal 2 of the same two-terminal resistor, 35W rated with heatsink at flange <=25C (2.25W without heatsink), operating -55 to +150C. |
| 3 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RESI |
| Package | TO-220 |
| Category | Resistors |
| Pins | 3 |

## 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 |  |  | 10 |  | Ω | nominal, catalog attribute (LCSC C19633588) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C19633588) | catalog |
| Rated power |  |  |  | 35 | W | catalog attribute (LCSC C19633588) | catalog |
| Temperature coefficient | TCR | -100 |  | 100 | ppm/°C | catalog description (LCSC C19633588) | catalog |
| Operating temperature |  | -55 |  | 150 | °C | catalog description (LCSC C19633588) | catalog |

## CAD (KiCad official)

- Symbol: `TPAL0220F10R0K9`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `tpal0220f10r0k9-etched.step` / `tpal0220f10r0k9-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpal0220f10r0k9.step` / `tpal0220f10r0k9.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RESI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758101084420624384) (12 pp, sha256 `2bf7f28ab7b7e9b0`, 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/tpal0220f10r0k9-datasheet.pdf)