# MBR0540W B4

**Slkor SLKORMICRO Elec** · Schottky Diodes · SOD-123

MBR0540W B4 from Slkor SLKORMICRO Elec, in a SOD-123. 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 terminal of the MBR0540W Schottky barrier rectifier, whose device maximum repetitive reverse voltage (VRRM) is 40 V with 0.5 A average forward current at Ta=25°C. |
| 2 | Anode | passive | Anode terminal of the MBR0540W Schottky barrier rectifier, whose device maximum repetitive reverse voltage (VRRM) is 40 V with 0.5 A average forward current at Ta=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOD-123 |
| Category | Diodes |
| 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 repetitive reverse voltage | VRRM |  |  | 40 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 40 | V |  | 1 |
| RMS reverse voltage | VRMS |  |  | 28 | V |  | 1 |
| Maximum average forward current | IO |  |  | 0.5 | A | Ta=25℃ | 1 |
| Junction temperature | Tj | -55 |  | 125 | °C |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal resistance, junction to ambient air | RθJA |  | 75 |  | °C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `MBR0540W B4`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mbr0540w-b4-etched.step` / `mbr0540w-b4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mbr0540w-b4.step` / `mbr0540w-b4.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/8590225233015189504) (3 pp, sha256 `c56606e423d61b39`, retrieved 2026-10-17, 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/mbr0540w-b4-datasheet.pdf)