# RB521CS-30

**TECH PUBLIC** · Schottky Diodes · SOD-923

RB521CS-30 from TECH PUBLIC, in a SOD-923. 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 of the Schottky diode; reverse voltage VR max 30 V, average rectified forward current 200 mA, forward voltage 0.35 V max at IF=10 mA. |
| 2 | Anode | passive | Anode of the Schottky diode; peak forward surge current 500 mA, reverse current 10 µA max at VR=10 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOD-923 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `RB521CS-30`
- Footprint: `Diode_SMD:D_SOD-923`
- 3D model: SOD-923 (KiCad packages3D, STEP)
- 3D model files: `rb521cs-30-etched.step` / `rb521cs-30-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rb521cs-30.step` / `rb521cs-30.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588949308611153920) (2 pp, sha256 `810cfb388650ac10`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/rb521cs-30-datasheet.pdf)