# RLSD32A121C

**RUILON Shenzhen Ruilongyuan Elec** · ESD And Surge Protection (TVS/ESD) · SOD-323

RLSD32A121C from RUILON Shenzhen Ruilongyuan Elec, in a SOD-323. 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 | RUILON Shenzhen Ruilongyuan Elec |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Minimum Breakdown Voltage | VBR | 13.3 |  |  | V | @1mA | 2 |
| Clamping Voltage @1A | VC |  |  | 19 | V | VC@1A (max.) | 2 |
| Clamping Voltage @IPP | VC |  |  | 24 | V | 8/20μS, @IPP | 2 |
| Maximum Reverse Peak Pulse Current | IPP |  |  | 15 | A | 8/20μS | 2 |
| Reverse Leakage Current | IR |  |  | 1 | μA | @VRWM | 2 |
| Reverse Stand-Off Voltage | VRWM |  | 12 |  | V |  | 2 |
| Typical Capacitance | CJ |  | 30 |  | pF | DC=0V, 1 MHz | 2 |
| Peak Pulse Power | PPP |  |  | 320 | Watts | tp=8/20μs | 1 |
| ESD Voltage (Contact) | VESD | -30 |  | 30 | Kv | Contact | 1 |
| ESD Voltage (Air) | VESD | -30 |  | 30 | Kv | Air | 1 |
| Operating Temperature Range | Top | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| IEC61000-4-4 (EFT) |  |  |  | 40 | A | 5/50ns | 1 |
| Maximum lead temperature for soldering | TL |  |  | 260 | °C | during 10s | 1 |

## CAD (KiCad official)

- Symbol: `RLSD32A121C`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `rlsd32a121c-etched.step` / `rlsd32a121c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rlsd32a121c.step` / `rlsd32a121c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RUILON Shenzhen Ruilongyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172468150722560) (4 pp, sha256 `ba9084fd540f6014`, retrieved 2026-10-22, 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/rlsd32a121c-datasheet.pdf)