# 1.5KE18CA

**RUILON(Shenzhen Ruilongyuan Elec)** · TVS · DO-201

1.5KE18CA from RUILON(Shenzhen Ruilongyuan Elec), in a DO-201. 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 | A1 | passive | Bidirectional TVS terminal 1 (no polarity, no cathode band on CA parts); 1.5KE18CA has 15.3V stand-off, 17.1-18.9V breakdown at 1mA and 25.2V max clamping at 59.5A (10/1000µs). |
| 2 | A2 | passive | Bidirectional TVS terminal 2 (no polarity, interchangeable with terminal 1); 1500W peak pulse power at 10/1000µs, reverse leakage max 1µA at 15.3V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RUILON(Shenzhen Ruilongyuan Elec) |
| Package | DO-201 |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (min/max) | VBR | 17.1 |  | 18.9 | V | @IT = 1 mA | 2 |
| Reverse Stand-Off Voltage | VRWM |  | 15.3 |  | V |  | 2 |
| Max Clamping Voltage | VC |  |  | 25.2 | V | @IPP, 10/1000µs | 2 |
| Max Peak Pulse Current | IPP |  |  | 59.5 | A | 10/1000µs | 2 |
| Max Reverse Leakage Current | IR |  |  | 1 | µA | @VRWM | 2 |
| Test Current | IT |  | 1 |  | mA |  | 2 |
| Peak Pulse Power Dissipation | PPP |  |  | 1500 | W | 10x1000µs waveform (Note 1) | 1 |
| Steady State Power Dissipation | PD |  |  | 5 | W | infinite heat sink at TL=75°C | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |
| Voltage Tolerance |  | -5 |  | 5 | % | 5% voltage tolerance | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | l Matte tin lead-free Plated l Low incremental surge resistance | 1 |

## CAD (KiCad official)

- Symbol: `1.5KE18CA`
- Footprint: `Diode_THT:D_DO-201AD_P15.24mm_Horizontal`
- 3D model: DO-201 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [RUILON(Shenzhen Ruilongyuan Elec) datasheet](docs/1-5ke18ca-datasheet.pdf) (6 pp, sha256 `90967e81fb1cb38e`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/1-5ke18ca-datasheet.pdf)