# SMCJ40CA-TP

**MCC(Micro Commercial Components)** · TVS · SMC(DO-214AB)

SMCJ40CA-TP from MCC(Micro Commercial Components), in a SMC(DO-214AB). 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 | MCC(Micro Commercial Components) |
| Package | SMC(DO-214AB) |
| 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), SMCJ40CA | VBR | 44.4 |  | 49.1 | V | IT = 1 mA | 2 |
| Reverse stand-off voltage | VWM |  |  | 40 | V |  | 2 |
| Maximum clamping voltage | VC |  |  | 64.5 | V | At IPP = 23.3 A | 2 |
| Peak pulse current | IPP |  |  | 23.3 | A | Non-repetitive pulse, per Fig.3 and Note 2 | 2 |
| Reverse leakage current | ID |  |  | 1 | µA | At VWM | 2 |
| Peak pulse power dissipation | PPPM |  |  | 1500 | W | 10/1000 µs waveform, Notes 2,3, Fig.1 | 1 |
| Power dissipation on infinite heat sink | PD |  |  | 6.5 | W | Infinite heat sink, TL = 75 °C | 1 |
| Operating junction temperature range | TJ | -55 |  | 175 | °C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 175 | °C |  | 1 |
| Thermal resistance, junction to lead | RθJL |  | 15 |  | °C/W | Junction to lead, typical | 1 |
| Thermal resistance, junction to ambient | RθJA |  | 75 |  | °C/W | Junction to ambient, typical | 1 |
| ESD immunity, air discharge (IEC-61000-4-2) |  |  |  | 15 | kV | Air discharge, IEC-61000-4-2 | 1 |
| ESD immunity, contact discharge (IEC-61000-4-2) |  |  |  | 8 | kV | Contact discharge, IEC-61000-4-2 | 1 |
| Temperature coefficient |  |  | 0.1 |  | % | Typical value, per Features list | 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 | copper |  | 3. Mounted on 8.0mm2copper pads to each terminal. | 1 |

## CAD (KiCad official)

- Symbol: `SMCJ40CA-TP`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `smcj40ca-tp-etched.step` / `smcj40ca-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj40ca-tp.step` / `smcj40ca-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MCC(Micro Commercial Components) datasheet](docs/smcj40ca-tp-datasheet.pdf) (5 pp, sha256 `a76a853658b1986a`, retrieved 2026-10-22, 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/smcj40ca-tp-datasheet.pdf)