# SESD5Z12T1G

**JSMSEMI** · ESD And Surge Protection (TVS/ESD) · SOD-523

SESD5Z12T1G from JSMSEMI, in a SOD-523. 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 | Cathode | passive | Cathode of the unidirectional ESD TVS diode, connected to the protected line; working peak reverse voltage 12 V max, breakdown 14.1 V min at 1.0 mA. |
| 2 | Anode | passive | Anode of the unidirectional ESD TVS diode, normally connected to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOD-523 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SESD5Z12T1G`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `sesd5z12t1g-etched.step` / `sesd5z12t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sesd5z12t1g.step` / `sesd5z12t1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/sesd5z12t1g-datasheet.pdf) (3 pp, sha256 `035552bdb96aebc0`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/sesd5z12t1g-datasheet.pdf)