# SMF150CA

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

SMF150CA 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 | 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 | hongjiacheng |
| 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) | VBR | 167 |  |  | V | @IT = 1 mA | 3 |
| Breakdown voltage (max) | VBR |  |  | 185 | V | @IT = 1 mA | 3 |
| Maximum clamping voltage | VC |  |  | 243 | V | @IPP 0.8 A | 3 |
| Peak pulse current | IPP |  |  | 0.8 | A |  | 3 |
| Reverse leakage current | IR |  |  | 1 | uA | @VRWM | 3 |
| VBR tolerance (5% device) | VBR | -5 |  | 5 | % | 5% VBR voltage tolerance (A suffix) | 5 |
| Peak pulse power dissipation | PPPM |  |  | 200 | W | 10/1000us waveform (Note 1), (Note 2) | 1 |
| Power dissipation on infinite heat sink | PM(AV) |  |  | 0.4 | W | 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 | C |  | 1 |
| Reverse stand-off voltage | VRWM |  | 150 |  | V |  | 3 |
| Temperature coefficient of VBR | dVBR |  | 0.1 |  | % x VBR@25C x dT | Typical maximum | 1 |
| Typical thermal resistance junction to lead | RthetaJ-L |  | 100 |  | C/W |  | 1 |
| Typical thermal resistance junction to ambient | RthetaJ-A |  | 220 |  | 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 |  | tin | •Matte tin lead-free Plated •Halogen free and RoHS compliant | 1 |

## CAD (KiCad official)

- Symbol: `SMF150CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf150ca-etched.step` / `smf150ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf150ca.step` / `smf150ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [hongjiacheng datasheet](docs/smf150ca-datasheet.pdf) (5 pp, sha256 `c8f137df222c1c36`, retrieved 2026-10-21, 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/smf150ca-datasheet.pdf)