# P4SMAJ43CA-AU

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

P4SMAJ43CA-AU 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 | 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 | PANJIT International |
| Package | SMA(DO-214AC) |
| 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) | VBR | 47.8 |  |  | V | IT=1 mA, TA=25°C; UNI and BI share row | 2 |
| Breakdown voltage (max) | VBR |  |  | 52.8 | V | IT=1 mA, TA=25°C; UNI and BI share row | 2 |
| Reverse stand-off voltage | VRWM |  | 43 |  | V | UNI and BI share row | 2 |
| Reverse leakage current (uni-directional) | IR |  | 1 |  | uA | @VRWM, uni-directional | 2 |
| Reverse leakage current (bi-directional) | IR |  | 1 |  | uA | @VRWM, bi-directional | 2 |
| Clamping voltage | VC |  | 69.4 |  | V | @IPP 5.7 A, tp=10/1000us; UNI and BI share row | 2 |
| Peak pulse current | IPP |  | 5.7 |  | A | tp=10/1000us, for this variant | 2 |
| Peak Pulse Power Dissipation | PPP |  |  | 400 | W | tp=10/1000us, non-repetitive (Note 1) | 1 |
| Power Dissipation on Infinite Heat Sink | PD |  |  | 3.3 | W | TL=50°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 40 | A | 8.3ms single half sine-wave | 1 |
| ESD withstand voltage (air) | VESD | -30 |  | 30 | kV | ISO10605 C=330pF, R=330Ω, Air | 1 |
| ESD withstand voltage (contact) | VESD | -30 |  | 30 | kV | ISO10605 C=330pF, R=330Ω, Contact | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA |  | 70 |  | °C/W | FR4 PCB, single-sided copper, mini pad (Note 3) | 1 |

## CAD (KiCad official)

- Symbol: `P4SMAJ43CA-AU`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `p4smaj43ca-au-etched.step` / `p4smaj43ca-au-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p4smaj43ca-au.step` / `p4smaj43ca-au.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/8590229272943501312) (6 pp, sha256 `e8d5dda5117aa469`, retrieved 2026-10-13, 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/p4smaj43ca-au-datasheet.pdf)