# SR732BTTDR330F

**KOA Speer Elec** · Current Sense Resistors / Shunt Resistors · 1206

SR732BTTDR330F from KOA Speer Elec, in a 1206. 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 | First terminal electrode of the SR73 2B (1206) 33 mΩ ±1% current detecting chip resistor, rated 0.33W at 70°C ambient (0.5W at 110°C terminal temperature), terminal width c 0.5±0.3 mm. |
| 2 | 2 | passive | Second terminal electrode of the SR73 2B (1206) 33 mΩ ±1% current detecting chip resistor, rated 0.33W at 70°C ambient (0.5W at 110°C terminal temperature), terminal width c 0.5±0.3 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KOA Speer Elec |
| Package | 1206 |
| 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 |  |  | 330 |  | mΩ | nominal, catalog attribute (LCSC C186609) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C186609) | catalog |
| Rated power |  |  |  | 330 | mW | catalog attribute (LCSC C186609) | catalog |
| Temperature coefficient | TCR | -100 |  | 100 | ppm/°C | catalog description (LCSC C186609) | catalog |

## CAD (KiCad official)

- Symbol: `SR732BTTDR330F`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `sr732bttdr330f-etched.step` / `sr732bttdr330f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sr732bttdr330f.step` / `sr732bttdr330f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KOA Speer Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588909218065207296) (2 pp, sha256 `952a5b16856476ea`, retrieved 2026-11-06, 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/sr732bttdr330f-datasheet.pdf)