# RS6331BPXF

**Jiangsu RUNIC Tech** · Operational Amplifier · SOT-23-5

RS6331BPXF from Jiangsu RUNIC Tech, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | +IN | input | Non-inverting analog input. Rail-to-rail common-mode input range from -0.1V to +5.6V (with Vs=5.5V). Input bias current ~10pA typical. Diode-clamped to the supply rails; limit external current to ≤10mA if inputs swing more than 0.5V beyond the rails. |
| 2 | V- | power_in | Negative supply rail (or ground in single-supply operation). Total supply V+ to V- must be between 2.1V and 5.5V; absolute maximum 7.0V. Place a 0.1µF bypass capacitor close to the pin. |
| 3 | -IN | input | Inverting analog input. Rail-to-rail common-mode input range from -0.1V to +5.6V (with Vs=5.5V). Input bias current ~10pA typical. Diode-clamped to the supply rails; limit external current to ≤10mA if inputs swing more than 0.5V beyond the rails. |
| 4 | OUT | output | Op-amp output. Rail-to-rail swing (typ. 25mV from rail into 2kΩ, 8mV from rail into 10kΩ). Output source current up to ~120mA typical. Unity-gain stable. |
| 5 | V+ | power_in | Positive supply rail. Operating range 2.1V to 5.5V referenced to V-; absolute maximum 7.0V. Place a 0.1µF bypass capacitor close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | SOT-23-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `RS6331BPXF`
- `RS6331BPXFBPXC5`
- `RS6331BPXFPXC5`

## CAD (KiCad official)

- Symbol: `RS6331BPXF`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `rs6331bpxf-etched.step` / `rs6331bpxf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs6331bpxf.step` / `rs6331bpxf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu RUNIC Tech datasheet](docs/rs6331bpxf-datasheet.pdf) (14 pp, sha256 `d8e4258f5cf8d7eb`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/rs6331bpxf-datasheet.pdf)