# SMCJ70CA-L

**Shandong Jingdao Microelectronics** · ESD And Surge Protection (TVS/ESD) · SMC

SMCJ70CA-L from Shandong Jingdao Microelectronics, in a SMC. 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 | Cathode | passive | Pin 1 is labelled Cathode in the pinning table, which lists it under the Unipolar column; the bipolar (CA) symbol shows pin 1 without polarity. |
| 2 | Anode | passive | Pin 2 is labelled Anode in the pinning table, which lists it under the Unipolar column; the bipolar (CA) symbol shows pin 2 without polarity. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMC |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRMW |  |  | 70 | V |  | 2 |
| Breakdown voltage | VBR | 77.8 |  | 86 | V | @ IT = 1 mA | 2 |
| Maximum clamping voltage | VC |  |  | 113 | V | @ IPP = 13.3 A | 2 |
| Maximum reverse leakage | IR |  |  | 1 | μA | @ VR = 70 V | 2 |
| Maximum instantaneous forward voltage | VF |  |  | 3.5 | V | at 100 A, unidirectional only | 1 |
| Peak pulse power dissipation | PPPM |  |  | 1500 | W | 10/1000 us waveform | 1 |
| Peak forward surge current | IFSM |  |  | 200 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 |
| Power dissipation on infinite heat sink | PD |  |  | 6.5 | W | TA = 50°C | 1 |
| Operating junction and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Peak pulse current | IPPM |  | 13.3 |  | A | 10/1000 us waveform; tabulated IPP for SMCJ70CA | 2 |
| Typical thermal resistance junction to ambient | RθJA |  | 75 |  | °C/W | Note 1 | 1 |
| Thermal resistance junction to lead | RθJL |  | 15 |  | °C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `SMCJ70CA-L`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `smcj70ca-l-etched.step` / `smcj70ca-l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj70ca-l.step` / `smcj70ca-l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603154589311528960) (4 pp, sha256 `2d0d84c94c8e56f9`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/smcj70ca-l-datasheet.pdf)