# HCESD523NC36VU

**HXY MOSFET** · Electrostatic And Surge Protection (TVS/ESD) · SOD-523

HCESD523NC36VU from HXY MOSFET, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOD-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Breakdown Voltage | VBR | 40 |  |  | V | IT = 1mA | 2 |
| Reverse Leakage Current | IR |  |  | 5 | μA | VRWM = 36V | 2 |
| Reverse Working Voltage | VRWM |  |  | 36 | V |  | 2 |
| Maximum lead temperature for soldering | TL |  |  | 260 | °C | during 10s | 1 |
| Storage Temperature Range | Tstg | -55 |  | 155 | °C | Tamb = 25°C | 1 |
| Operating Temperature Range | Top | -40 |  | 125 | °C | Tamb = 25°C | 1 |
| Maximum junction temperature | Tj |  |  | 150 | °C | Tamb = 25°C | 1 |
| ESD air discharge | IEC61000-4-2 | -15 |  | 15 | KV | air discharge | 1 |
| ESD contact discharge | IEC61000-4-2 | -8 |  | 8 | KV | contact discharge | 1 |
| EFT | IEC61000-4-4 |  |  | 40 | A |  | 1 |

## CAD (KiCad official)

- Symbol: `HCESD523NC36VU`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `hcesd523nc36vu-etched.step` / `hcesd523nc36vu-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hcesd523nc36vu.step` / `hcesd523nc36vu.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](docs/hcesd523nc36vu-datasheet.pdf) (4 pp, sha256 `5e47d4f2d7c595e9`, retrieved 2026-10-26, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band 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/hcesd523nc36vu-datasheet.pdf)