# WS72358M-8

**WILLSEMI Will Semicon** · Operational Amplifier · MSOP-8

WS72358M-8 from WILLSEMI Will Semicon, in a MSOP-8. 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 | OUTA | output | Amplifier A output. Rail-to-rail output stage; drives loads down to 2kΩ, output short-circuit current ~46mA. |
| 2 | -INA | input | Amplifier A inverting input. Common-mode input range (V-)-0.2V to (V+)+0.2V; input bias current ~10pA. |
| 3 | +INA | input | Amplifier A non-inverting input. Rail-to-rail input capability; input bias current ~10pA. |
| 4 | V- | power_in | Negative supply / ground. Supply voltage (V+)-(V-) is 1.8V to 5.5V; absolute maximum 6V. |
| 5 | +INB | input | Amplifier B non-inverting input. Rail-to-rail input capability; input bias current ~10pA. |
| 6 | -INB | input | Amplifier B inverting input. Common-mode input range (V-)-0.2V to (V+)+0.2V; input bias current ~10pA. |
| 7 | OUTB | output | Amplifier B output. Rail-to-rail output stage; drives loads down to 2kΩ, output short-circuit current ~46mA. |
| 8 | V+ | power_in | Positive supply. Single supply 1.8V to 5.5V referenced to V-; absolute maximum (V+)-(V-) = 6V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI Will Semicon |
| Package | MSOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `WS72358M-8/TR`
- `WS72358M-8S-8/TR`

## CAD (KiCad official)

- Symbol: `WS72358M-8`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ws72358m-8-etched.step` / `ws72358m-8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ws72358m-8.step` / `ws72358m-8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [WILLSEMI Will Semicon datasheet](docs/ws72358m-8-datasheet.pdf) (12 pp, sha256 `0e7700e3ab6d8595`, 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/ws72358m-8-datasheet.pdf)