component
SMF4731A
Public Made by Adomby adom
ZHIDE Zener Diodes, 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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SMF4731A
ZHIDE · Zener Diodes · SOD-123FL
SMF4731A from ZHIDE, 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 | ZHIDE |
| Package | SOD-123FL |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal VZ AVE, min and max) | VZ | 4.09 | 4.3 | 4.52 | V | @ IZT = 58.0 mA | 3 |
| Zener impedance (ZZT max) | ZZT | 9 | Ω | @ IZT = 58.0 mA | 3 | ||
| Zener impedance at knee (ZZK max) | ZZK | 400 | Ω | @ IZK = 1.00 mA | 3 | ||
| Maximum reverse leakage current (IR max) | IR | 10 | µA | @ VR = 1.0 V | 3 | ||
| Maximum zener current (IZM) | IZM | 210 | mA | 3 | |||
| Maximum forward voltage | VF | 1.2 | V | if=200mA | 1 | ||
| DC power dissipation | PD | 1 | W | TL = 75 °C (lead temperature at 3/8'' (9.5mm) from body, note 1) | 1 | ||
| Junction temperature range | TJ | -55 | 150 | ℃ | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
SMF4731A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf4731a-etched.step/smf4731a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf4731a.step/smf4731a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZHIDE datasheet (3 pp, sha256
c1c1f3bc25a0feef, retrieved 2026-10-16, 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).
# SMF4731A
**ZHIDE** · Zener Diodes · SOD-123FL
SMF4731A from ZHIDE, 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 | ZHIDE |
| Package | SOD-123FL |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal VZ AVE, min and max) | VZ | 4.09 | 4.3 | 4.52 | V | @ IZT = 58.0 mA | 3 |
| Zener impedance (ZZT max) | ZZT | | | 9 | Ω | @ IZT = 58.0 mA | 3 |
| Zener impedance at knee (ZZK max) | ZZK | | | 400 | Ω | @ IZK = 1.00 mA | 3 |
| Maximum reverse leakage current (IR max) | IR | | | 10 | µA | @ VR = 1.0 V | 3 |
| Maximum zener current (IZM) | IZM | | | 210 | mA | | 3 |
| Maximum forward voltage | VF | | | 1.2 | V | if=200mA | 1 |
| DC power dissipation | PD | | | 1 | W | TL = 75 °C (lead temperature at 3/8'' (9.5mm) from body, note 1) | 1 |
| Junction temperature range | TJ | -55 | | 150 | ℃ | | 1 |
| Storage temperature range | TSTG | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `SMF4731A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `smf4731a-etched.step` / `smf4731a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf4731a.step` / `smf4731a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ZHIDE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590891643367747584) (3 pp, sha256 `c1c1f3bc25a0feef`, retrieved 2026-10-16, 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/smf4731a-datasheet.pdf)