# LESD5Z3.3T1G

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

LESD5Z3.3T1G from LRC, 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 | K | passive | Cathode of the unidirectional TVS diode (marked-band side); connects to the protected signal line, with VRWM 3.3 V, IR max 1.0 uA at VRWM and VBR min 5.0 V at IT = 1.0 mA for LESD5Z3.3T1G. |
| 2 | A | passive | Anode of the unidirectional TVS diode; connects to ground, with VC max 14.1 V at IPP = 11.2 A and 200 W peak pulse power (8/20 us) for the series. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LESD5Z3.3T1G`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `lesd5z3-3t1g-etched.step` / `lesd5z3-3t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lesd5z3-3t1g.step` / `lesd5z3-3t1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586188020999864320) (6 pp, sha256 `24abac5aa3f704f6`, retrieved 2026-10-12, 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/lesd5z3-3t1g-datasheet.pdf)