# RB411D

**Changjing** · Schottky Diodes · SOT-23

RB411D from Changjing, in a SOT-23. 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 | A | passive | Anode of the Schottky diode, per the internal diagram on page 1 (forward voltage max 0.5 V at IF=500 mA, mean rectified output current 500 mA). |
| 2 | NC | unconnected | No internal connection; shown as an unconnected open terminal in the page 1 diagram. |
| 3 | K | passive | Cathode of the Schottky diode, per the internal diagram on page 1 (DC reverse voltage 20 V, peak repetitive reverse voltage 40 V, reverse current max 30 µA at VR=10 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF1 |  |  | 0.3 | V | IF=10mA | 1 |
| Forward voltage | VF2 |  |  | 0.5 | V | IF=500mA | 1 |
| Reverse current | IR |  |  | 30 | μA | VR=10V | 1 |
| Capacitance between terminals | CT |  |  | 20 | pF | VR=10V,f=1MHz | 1 |
| Reverse breakdown voltage | VR | 20 |  |  | V | IR=100μA | 1 |
| Operating Junction Temperature Range | Tj | -40 |  | 125 | ℃ |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Peak Repetitive Reverse Voltage | VRM |  |  | 40 | V |  | 1 |
| RMS reverse voltage | VR(RMS) |  |  | 28 | V |  | 1 |
| Mean rectifying output current | IO |  |  | 500 | mA |  | 1 |
| Non-repetitive Peak Forward Surge Current | IFSM |  |  | 3 | A | t=8.3ms | 1 |
| DC reverse voltage | VR |  |  | 20 | V |  | 1 |
| Power Dissipation | PD |  |  | 200 | mW |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  |  | 500 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `RB411D`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `rb411d-etched.step` / `rb411d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rb411d.step` / `rb411d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590215147567681536) (4 pp, sha256 `eb4911f44c6f3c41`, retrieved 2026-10-19, 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/rb411d-datasheet.pdf)