# COS9051TR

**COSINE** · Operational Amplifier · SOT23-5

COS9051TR from COSINE, in a SOT23-5. 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 with a 0.1µF capacitor as close to the part as possible. |
| 3 | +IN | input | Non-inverting input of the amplifier, with a voltage range from -Vs -0.3V to +Vs +0.3V. |
| 4 | -IN | input | Inverting input of the amplifier, with a voltage range from -Vs -0.3V to +Vs +0.3V. |
| 5 | +Vs | power_in | Positive power supply (1.8V to 7.0V operating range), with a 0.1µF bypass capacitor placed as close to the part as possible. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOT23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range |  | 1.8 |  | 7 | V |  | 4 |
| Common-Mode Voltage Range | VCM | -0.1 |  | 5.6 | V | VS = 5.5V | 4 |
| Power Supply Rejection Ratio | PSRR | 80 | 100 |  | dB | VS = +1.8V to +5.5V | 4 |
| DC Supply Voltage |  | 1.8 |  | 7 | V |  | 3 |
| Operating Ambient Temperature |  | -40 |  | 85 | °C |  | 3 |
| Power Supply: +Vs to -Vs |  |  |  | 7.5 | V |  | 3 |
| Input Current |  |  |  | 10 | mA | Input terminals; signals beyond supply rails by more than 0.5V should be current-limited to 10mA or less | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| Package Thermal Resistance (Junction-to-ambient) | RθJA |  | 190 |  | °C/W | SOT23-5 package | 3 |

## CAD (KiCad official)

- Symbol: `COS9051TR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `cos9051tr-etched.step` / `cos9051tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos9051tr.step` / `cos9051tr.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/8775047869898338304) (11 pp, sha256 `baec77942313e4d6`, retrieved 2026-10-18, 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/cos9051tr-datasheet.pdf)