# SMF17CA

**Shandong Jingdao Microelectronics** · TVS · SOD-123FL

SMF17CA from Shandong Jingdao Microelectronics, in a SOD-123FL. 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 | 1 | passive | Terminal 1 of the bidirectional (CA) TVS; the pinning table labels pin 1 as Cathode for the unipolar parts, but the bipolar symbol shows only terminals 1 and 2. |
| 2 | 2 | passive | Terminal 2 of the bidirectional (CA) TVS; the pinning table labels pin 2 as Anode for the unipolar parts, but the bipolar symbol shows only terminals 1 and 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SOD-123FL |
| 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 (minimum) | VBR | 18.9 |  |  | V | IT = 1 mA | 2 |
| Breakdown voltage (maximum) | VBR |  |  | 20.9 | V | IT = 1 mA | 2 |
| Reverse leakage current | IR |  |  | 1 | μA | VRWM = 17 V | 2 |
| Maximum clamp voltage | VC |  |  | 27.6 | V | IPP = 7.2 A | 2 |
| Peak pulse power dissipation | PPPM |  |  | 200 | W | TA=25°C (Note 1,2,5, Fig1) | 1 |
| Peak forward surge current | IFSM |  |  | 20 | A | (UNI), Note 3 | 1 |
| Steady state power dissipation | PM(AV) |  |  | 1 | W | Note 4; lead temperature TL (value garbled in source) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |
| Reverse stand-off voltage | VRWM |  | 17 |  | V | Note 6 | 2 |
| Typical thermal resistance, junction to ambient | RθJA |  | 180 |  | °C/W |  | 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 |  | 2. Mounted on 5mm copper pads to each terminal | 1 |

## CAD (KiCad official)

- Symbol: `SMF17CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf17ca-etched.step` / `smf17ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf17ca.step` / `smf17ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smf17ca-datasheet.pdf) (4 pp, sha256 `815402489fb37067`, retrieved 2026-10-21, 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/smf17ca-datasheet.pdf)