# P4SMA18CAS_R1_00001

**PANJIT International** · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

P4SMA18CAS_R1_00001 from PANJIT International, in a SMA(DO-214AC). 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 | 1 | passive | Bidirectional TVS terminal 1 (P4SMA18CAS, interchangeable with terminal 2); reverse stand-off voltage VRWM 15.3 V, breakdown 17.1 V typ-range (16.2-18.9 per table min/max 17.1-18.9 V) and clamping voltage 25.2 V at 17 A peak pulse current. |
| 2 | 2 | passive | Bidirectional TVS terminal 2 (P4SMA18CAS, interchangeable with terminal 1); reverse stand-off voltage VRWM 15.3 V, breakdown 17.1 V min to 18.9 V max at 1 mA, and clamping voltage 25.2 V at 17 A peak pulse current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| Package | SMA(DO-214AC) |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `P4SMA18CAS_R1_00001`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `p4sma18cas-r1-00001-etched.step` / `p4sma18cas-r1-00001-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p4sma18cas-r1-00001.step` / `p4sma18cas-r1-00001.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603190046891515904) (6 pp, sha256 `ea7b92f2ec457ace`, retrieved 2026-10-13, 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/p4sma18cas-r1-00001-datasheet.pdf)