# SMF36CA

**hongjiacheng** · Electrostatic And Surge Protection (TVS/ESD) · SOD-123FL

SMF36CA from hongjiacheng, 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 an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOD-123FL |
| Category | TVS/Fuse/Board Level 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 (bidirectional, SMF36CA) | VBR | 40 |  | 44.2 | V | @ IT = 1 mA (test current) | 2 |
| Maximum clamping voltage (bidirectional, SMF36CA) | VC |  |  | 58.1 | V | @ IPP = 3.4 A | 2 |
| Reverse leakage (bidirectional, SMF36CA) | IR |  |  | 1 | μA | @ VRWM = 36 V | 2 |
| Peak pulse power dissipation | PPPM |  |  | 200 | W | 10/1000µs waveform (Fig.1) (Note 1), (Note 2) | 1 |
| Power dissipation on infinite heat sink | PM(AV) |  |  | 0.4 | W | at TL = 75° C | 1 |
| Peak forward surge current | IFSM |  |  | 30 | A | 8.3 ms single half sine wave (Note 3) | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction to lead | RθJ-L |  | 100 |  | ℃ /W | Typical, junction to lead | 1 |
| Thermal resistance junction to ambient | RθJ-A |  | 220 |  | ℃ /W | Typical, junction to ambient | 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 |  | tin | •Matte tin lead-free Plated •Halogen free and RoHS compliant | 1 |

## CAD (KiCad official)

- Symbol: `SMF36CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [hongjiacheng datasheet](docs/smf36ca-datasheet.pdf) (5 pp, sha256 `c8f137df222c1c36`, retrieved 2026-11-04, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/smf36ca-datasheet.pdf)