# SLESDLC3V0L4

**Slkor SLKORMICRO Elec** · ESD And Surge Protection (TVS/ESD) · SOT-553

SLESDLC3V0L4 from Slkor SLKORMICRO Elec, in a SOT-553. 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 | IO | bidirectional | Connects to an I/O line for ESD and transient protection; the datasheet gives no pin-specific limits, only device-level ratings such as 5 V reverse stand-off voltage and 4.5 A peak pulse current (8/20us). |
| 2 | GND | power_in | Connects to ground, the common reference for the protection clamping of the I/O pins. |
| 3 | IO | bidirectional | Connects to an I/O line for ESD and transient protection; the datasheet gives no pin-specific limits, only device-level ratings such as 5 V reverse stand-off voltage and 4.5 A peak pulse current (8/20us). |
| 4 | IO | bidirectional | Connects to an I/O line for ESD and transient protection; the datasheet gives no pin-specific limits, only device-level ratings such as 5 V reverse stand-off voltage and 4.5 A peak pulse current (8/20us). |
| 5 | IO | bidirectional | Connects to an I/O line for ESD and transient protection; the datasheet gives no pin-specific limits, only device-level ratings such as 5 V reverse stand-off voltage and 4.5 A peak pulse current (8/20us). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-553 |
| Category | Circuit Protection |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `SLESDLC3V0L4`
- Footprint: `Package_TO_SOT_SMD:SOT-553`
- 3D model: SOT-553 (KiCad packages3D, STEP)
- 3D model files: `slesdlc3v0l4-etched.step` / `slesdlc3v0l4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `slesdlc3v0l4.step` / `slesdlc3v0l4.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603367641276817408) (5 pp, sha256 `9bae7cc6dee8b795`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/slesdlc3v0l4-datasheet.pdf)