# SMCJ43CAHE3_A

**Vishay Intertech** · TVS · DO-214AB(SMCJ)

SMCJ43CAHE3_A from Vishay Intertech, in a DO-214AB(SMCJ). 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 | T1 | passive | Bidirectional TVS terminal with no polarity marking; electrical characteristics apply in both directions, with VWM 43 V and 1500 W peak pulse power (10/1000 μs). |
| 2 | T2 | passive | Bidirectional TVS terminal with no polarity marking; electrical characteristics apply in both directions, with VWM 43 V and 1500 W peak pulse power (10/1000 μs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-214AB(SMCJ) |
| Category | TVS/Fuse/Board Level 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 | VBR | 47.8 |  | 52.8 | V | IT = 1.0 mA | 2 |
| Maximum reverse leakage at VWM | ID |  |  | 1 | μA | at VWM | 2 |
| Maximum peak pulse surge current | IPPM |  |  | 21.6 | A | 10/1000 μs waveform | 2 |
| Maximum clamping voltage | VC |  |  | 69.4 | V | at IPPM | 2 |
| Maximum temperature coefficient of VBR |  |  |  | 0.102 | %/°C |  | 2 |
| Peak pulse power dissipation | PPPM |  |  | 1500 | W | 10/1000 μs waveform (1)(2) | 1 |
| Power dissipation on infinite heatsink | PD |  |  | 6.5 | W | TA = 50 °C | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Typical thermal resistance, junction to ambient air | RθJA |  | 75 |  | °C/ W | mounted on minimum recommended pad layout | 3 |
| Typical thermal resistance, junction to lead | RθJL |  | 15 |  | °C/ W |  | 3 |

## 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 | Terminals: matte tin plated leads, solderable per J-STD-002 and JESD 22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `SMCJ43CAHE3_A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](docs/smcj43cahe3-a-datasheet.pdf) (6 pp, sha256 `d31c22200dda4289`, retrieved 2026-11-08, tier: manufacturer)
- **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/smcj43cahe3-a-datasheet.pdf)