# SMF48CA

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

SMF48CA 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 | Cathode | passive | Cathode terminal as listed in the PINNING table; the datasheet symbol shows both unipolar and bipolar forms, so this label applies to the unidirectional symbol. |
| 2 | Anode | passive | Anode terminal as listed in the PINNING table; the datasheet symbol shows both unipolar and bipolar forms, so this label applies to the unidirectional symbol. |

## 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 (min) at IT | VBR | 53.3 |  |  | V | @ IT (test current, Table 1) | 2 |
| Breakdown voltage (max) at IT | VBR |  |  | 58.9 | V | @ IT (test current, Table 1) | 2 |
| Maximum clamp voltage | VC |  |  | 77.4 | V | @ IPP | 2 |
| Peak pulse power dissipation | PPPM |  |  | 200 | W | TA=25°C, 10/1000us waveform (Notes 1,2,5, Fig 1) | 1 |
| Steady state power dissipation | PM(AV) |  |  | 1 | W | TL=75°C (Note 4) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |
| Typical thermal resistance, junction to ambient | RθJA |  | 180 |  | °C/W |  | 1 |
| Working peak reverse voltage (stand-off) | VRWM |  | 48 |  | V |  | 2 |
| Reverse leakage current | IR |  | 1 |  | μA | @ VRWM | 2 |
| Peak pulse current | IPP |  | 2.6 |  | A | 10/1000us waveform (Note 1) | 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 | copper |  | 2. Mounted on 5mm copper pads to each terminal | 1 |

## CAD (KiCad official)

- Symbol: `SMF48CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf48ca-etched.step` / `smf48ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf48ca.step` / `smf48ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smf48ca-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/smf48ca-datasheet.pdf)