# MSESD5V0S1BA

**MSKSEMI** · ESD And Surge Protection (TVS/ESD) · SOD-323

MSESD5V0S1BA from MSKSEMI, in a SOD-323. 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOD-323 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak pulse power (tp = 8/20μs) | PPK |  |  | 150 | Watts | tp = 8/20μs | 2 |
| Reverse working voltage | VRWM |  |  | 5 | V |  | 2 |
| Reverse leakage current | IR |  |  | 1 | µA | @VRWM | 2 |
| Breakdown voltage | VBR | 5.8 |  |  | V | @ImA | 2 |
| Clamping voltage | VC |  |  | 11.8 | V | @1A | 2 |
| Clamping voltage | VC |  |  | 15 | V | @IPP | 2 |
| Peak pulse current (IPP) column |  |  |  | 10 | A |  | 2 |
| Junction capacitance | CJ |  |  | 10 | pF |  | 2 |
| Lead soldering temperature | TL |  |  | 260 | ℃ | 10 sec. | 2 |
| Operating temperature | TJ | -55 |  | 125 | ℃ |  | 2 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `MSESD5V0S1BA`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `msesd5v0s1ba-etched.step` / `msesd5v0s1ba-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msesd5v0s1ba.step` / `msesd5v0s1ba.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590181829141049344) (5 pp, sha256 `c2c5b140783e70ff`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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/msesd5v0s1ba-datasheet.pdf)