component
SMF190A
Public Made by Adomby adom
MDD（Microdiode Electronics） TVS, SOD-123FL. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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SMF190A
MDD（Microdiode Electronics） · TVS · SOD-123FL
SMF190A from MDD（Microdiode Electronics）, 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 | MDD（Microdiode Electronics） |
| 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 | 190 | V | 2 | |||
| Breakdown Voltage | VBR | 211 | 232 | V | @ IT | 2 | |
| Test Current | IT | 1 | mA | 2 | |||
| Reverse Leakage Current | IR | 1 | µA | @ VRWM | 2 | ||
| Max. Clamp Voltage | VC | 308 | V | @ IPP | 2 | ||
| Peak Pulse Current | IPP | 0.5 | A | 10/1000 us waveform | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 200 | W | TA=25°C (Note 1,2,5, Fig1) | 1 | ||
| Peak Forward Surge Current | IFSM | 20 | A | Note 3, 8.3ms single half sinewave (UNI) | 1 | ||
| Steady State Power Dissipation | PM(AV) | 1 | W | Note 4, 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 | copper pads to each terminal | 1 |
CAD (KiCad official)
- Symbol:
SMF190A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf190a-etched.step/smf190a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf190a.step/smf190a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MDD（Microdiode Electronics） datasheet (4 pp, sha256
a25eff3c49c14833, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).
# SMF190A
**MDD（Microdiode Electronics）** · TVS · SOD-123FL
SMF190A from MDD（Microdiode Electronics）, 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 | MDD（Microdiode Electronics） |
| 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 | | 190 | | V | | 2 |
| Breakdown Voltage | VBR | 211 | | 232 | V | @ IT | 2 |
| Test Current | IT | | 1 | | mA | | 2 |
| Reverse Leakage Current | IR | | | 1 | µA | @ VRWM | 2 |
| Max. Clamp Voltage | VC | | | 308 | V | @ IPP | 2 |
| Peak Pulse Current | IPP | | | 0.5 | A | 10/1000 us waveform | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 200 | W | TA=25°C (Note 1,2,5, Fig1) | 1 |
| Peak Forward Surge Current | IFSM | | | 20 | A | Note 3, 8.3ms single half sinewave (UNI) | 1 |
| Steady State Power Dissipation | PM(AV) | | | 1 | W | Note 4, 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 | | copper pads to each terminal | 1 |
## CAD (KiCad official)
- Symbol: `SMF190A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf190a-etched.step` / `smf190a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf190a.step` / `smf190a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MDD（Microdiode Electronics） datasheet](docs/smf190a-datasheet.pdf) (4 pp, sha256 `a25eff3c49c14833`, retrieved 2026-10-22, 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/smf190a-datasheet.pdf)