# NCV20166SN2T1G

**onsemi** · Precision OpAmps · SC-74A-5

NCV20166SN2T1G from onsemi, in a SC-74A-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, rail-to-rail, with short-circuit current of 25 mA sinking or sourcing and continuous short-circuit protection to ground up to TA = 125°C. |
| 2 | VSS | power_in | Negative supply (ground); supply voltage VDD − VSS must be 3 V to 5.5 V, with 6 V absolute maximum. |
| 3 | IN+ | input | Non-inverting input, rail-to-rail with common-mode range VSS to VDD and diode-clamped to the supply rails, so input current must be limited to 10 mA or less. |
| 4 | IN− | input | Inverting input, rail-to-rail with common-mode range VSS to VDD and diode-clamped to the supply rails, so input current must be limited to 10 mA or less. |
| 5 | VDD | power_in | Positive supply; supply voltage VDD − VSS must be 3 V to 5.5 V, with 6 V absolute maximum, and a 0.1 µF decoupling capacitor should be placed close to it. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SC-74A-5 |
| Category | Amplifiers |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `NCV20166SN2T1G`
- Footprint: `Package_TO_SOT_SMD:SC-74A-5_1.55x2.9mm_P0.95mm`
- 3D model: SC-74A-5 (KiCad packages3D, STEP)
- 3D model files: `ncv20166sn2t1g-etched.step` / `ncv20166sn2t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ncv20166sn2t1g.step` / `ncv20166sn2t1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/ncv20166sn2t1-d.pdf) (14 pp, sha256 `7ede61f2df7836d9`, retrieved 2026-10-30, tier: manufacturer)
- **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/ncv20166sn2t1g-datasheet.pdf)