# SMAJ33CA-E3

**Vishay Intertech** · TVS · SMA(DO-214AC)

SMAJ33CA-E3 from Vishay Intertech, 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 | A1 | passive | Bi-directional (CA suffix) terminal with electrical characteristics applying in both directions (VWM 33 V for SMAJ33CA) and no polarity marking; the datasheet does not number the terminals. |
| 2 | A2 | passive | Bi-directional (CA suffix) terminal with electrical characteristics applying in both directions and no cathode band, so the two terminals are interchangeable; the datasheet does not number the terminals. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 | VBR | 36.7 |  | 40.6 | V | at IT = 1.0 mA | 2 |
| Stand-off voltage | VWM |  | 33 |  | V |  | 2 |
| Maximum reverse leakage | ID |  |  | 1 | µA | at VWM | 2 |
| Maximum peak pulse surge current | IPPM |  |  | 7.5 | A | surge current waveform per fig. 3 | 2 |
| Maximum clamping voltage | VC |  |  | 53.3 | V | at IPPM | 2 |
| Peak pulse power dissipation | PPPM |  |  | 400 | W | 10/1000 μs waveform, TA = 25 °C | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Typical thermal resistance, junction to ambient | RθJA |  | 120 |  | °C/W | Mounted on minimum recommended pad layout | 3 |
| Typical thermal resistance, junction to lead | RθJL |  | 30 |  | °C/W |  | 3 |
| Breakdown test current | IT |  | 1 |  | mA |  | 2 |

## 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: `SMAJ33CA-E3`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `smaj33ca-e3-etched.step` / `smaj33ca-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj33ca-e3.step` / `smaj33ca-e3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](docs/smaj33ca-e3-datasheet.pdf) (5 pp, sha256 `a8b4ab89358fda2a`, retrieved 2026-10-22, 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/smaj33ca-e3-datasheet.pdf)