# MC33078D

**STMicroelectronics** · Operational Amplifier · SO-8

MC33078D from STMicroelectronics, in a SO-8. 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 | Output 1 | output | Output of amplifier 1; the output stage provides a large output voltage swing and symmetrical source and sink currents. |
| 2 | Inverting input 1 | input | Inverting input of amplifier 1. |
| 3 | Non-inverting input 1 | input | Non-inverting input of amplifier 1. |
| 4 | VCC- | power_in | Negative supply rail; the device operates from supplies of ±2.5 V to ±15 V (VCC+ to VCC- as a split supply). |
| 5 | Non-inverting input 2 | input | Non-inverting input of amplifier 2. |
| 6 | Inverting input 2 | input | Inverting input of amplifier 2. |
| 7 | Output 2 | output | Output of amplifier 2; the output stage provides a large output voltage swing and symmetrical source and sink currents. |
| 8 | VCC+ | power_in | Positive supply rail; the device operates from supplies of ±2.5 V to ±15 V, with absolute maximum supply voltage of ±18 V or +36 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `MC33078D`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `mc33078d-etched.step` / `mc33078d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc33078d.step` / `mc33078d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590458971527286784) (15 pp, sha256 `51b16bf21965c6dd`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/mc33078d-datasheet.pdf)