component
SMF28A CG
Public Made by Adomby adom
JUXING ESD And Surge Protection (TVS/ESD), SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMF28A CG
JUXING · ESD And Surge Protection (TVS/ESD) · SOD-123FL
SMF28A CG from JUXING, 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 of the unidirectional TVS diode (SMF28A), connected to the positive side of the protected line. |
| 2 | Anode | passive | Anode of the unidirectional TVS diode (SMF28A), connected to the ground/return side of the protected line. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRWM | 28 | V | SMF28A | 2 | ||
| Breakdown voltage | VBR | 31.1 | 34.4 | V | @ IT = 1 mA | 2 | |
| Test current | IT | 1 | mA | 2 | |||
| Reverse leakage current | IR | 1 | μA | @ VRWM | 2 | ||
| Maximum clamp voltage | VC | 45.4 | V | @ IPP | 2 | ||
| Peak pulse current | IPP | 4.4 | A | 10/1000 us waveform | 2 | ||
| Peak pulse power dissipation | PPPM | 200 | W | TA=25°C, 10/1000us waveform | 1 | ||
| Peak forward surge current | IFSM | 20 | A | 8.3ms single half sinewave (UNI) | 1 | ||
| Steady state power dissipation | PM(AV) | 1 | W | TL=75°C | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | °C | 1 | ||
| Typical thermal resistance | 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:
SMF28A CG - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf28a-cg-etched.step/smf28a-cg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf28a-cg.step/smf28a-cg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JUXING datasheet (4 pp, sha256
3b5a2aa506e6a0b2, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# SMF28A CG
**JUXING** · ESD And Surge Protection (TVS/ESD) · SOD-123FL
SMF28A CG from JUXING, 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 of the unidirectional TVS diode (SMF28A), connected to the positive side of the protected line. |
| 2 | Anode | passive | Anode of the unidirectional TVS diode (SMF28A), connected to the ground/return side of the protected line. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRWM | | 28 | | V | SMF28A | 2 |
| Breakdown voltage | VBR | 31.1 | | 34.4 | V | @ IT = 1 mA | 2 |
| Test current | IT | | 1 | | mA | | 2 |
| Reverse leakage current | IR | | | 1 | μA | @ VRWM | 2 |
| Maximum clamp voltage | VC | | | 45.4 | V | @ IPP | 2 |
| Peak pulse current | IPP | | | 4.4 | A | 10/1000 us waveform | 2 |
| Peak pulse power dissipation | PPPM | | | 200 | W | TA=25°C, 10/1000us waveform | 1 |
| Peak forward surge current | IFSM | | | 20 | A | 8.3ms single half sinewave (UNI) | 1 |
| Steady state power dissipation | PM(AV) | | | 1 | W | TL=75°C | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 | | 150 | °C | | 1 |
| Typical thermal resistance | 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: `SMF28A CG`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf28a-cg-etched.step` / `smf28a-cg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf28a-cg.step` / `smf28a-cg.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JUXING datasheet](docs/smf28a-cg-datasheet.pdf) (4 pp, sha256 `3b5a2aa506e6a0b2`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/smf28a-cg-datasheet.pdf)