# ESD5V0U1UT-MS

**MSKSEMI** · ESD Protection Devices · SOT-23

ESD5V0U1UT-MS from MSKSEMI, in a SOT-23. 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 | IO1 | passive | Protected line 1 of two bidirectional lines, with VRWM 5 V max, VB 6 V min at 1 mA, and VC 18 V max at 5 A for ESD5V0U1UT-MS. |
| 2 | IO2 | passive | Protected line 2 of two bidirectional lines, with VRWM 5 V max, VB 6 V min at 1 mA, and VC 18 V max at 5 A for ESD5V0U1UT-MS. |
| 3 | COM | passive | Common pin of the two-line TVS array shown in the schematic, shared by both protection diodes, with ESD protection per IEC 61000-4-2 of ±30 kV (air) and ±30 kV (contact). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `ESD5V0U1UT-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `esd5v0u1ut-ms-etched.step` / `esd5v0u1ut-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5v0u1ut-ms.step` / `esd5v0u1ut-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](docs/esd5v0u1ut-ms-datasheet.pdf) (5 pp, sha256 `c45ed0df1994c746`, retrieved 2026-10-28, 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/esd5v0u1ut-ms-datasheet.pdf)