# COS1333TRA

**COSINE** · Precision Op Amps · SOT-23-5

COS1333TRA from COSINE, in a SOT-23-5. 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 | OUT | output | Amplifier output, whose voltage range extends to within millivolts of each supply rail. |
| 2 | -Vs | power_in | Negative power supply or ground; if not connected to ground, bypass it with a 0.1µF capacitor placed as close to the part as possible. |
| 3 | +IN | input | Non-inverting input of the amplifier, with a voltage range of -Vs -0.3V to +Vs +0.3V. |
| 4 | -IN | input | Inverting input of the amplifier, with a voltage range of -Vs -0.3V to +Vs +0.3V. |
| 5 | +Vs | power_in | Positive power supply (1.8V to 5.5V); place a 0.1µF bypass capacitor as close to the part as possible. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `COS1333TRA`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `cos1333tra-etched.step` / `cos1333tra-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos1333tra.step` / `cos1333tra.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8556906435473653760) (12 pp, sha256 `c3ad960030bd3dfd`, retrieved 2026-10-09, 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/cos1333tra-datasheet.pdf)