component
SMA4731A
Public Made by Adomby adom
ZHIDE Zener Diodes, SMA. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSMA4731A
ZHIDE · Zener Diodes · SMA
SMA4731A from ZHIDE, in a SMA. 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 | SMA |
| 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 | VZ | 4.09 | 4.3 | 4.52 | V | @IZT = 9.0 mA | 3 |
| Maximum zener impedance (at IZT) | ZZT | 58 | Ω | @IZT = 9.0 mA | 3 | ||
| Maximum zener impedance (at IZK) | ZZK | 400 | Ω | @IZK = 1.00 mA | 3 | ||
| Maximum reverse leakage current | IR | 10 | µA | @VR = 1.0 V | 3 | ||
| Maximum DC zener current | IZM | 210 | mA | 3 | |||
| Maximum forward voltage | VF | 1.2 | V | at if=200mA | 1 | ||
| DC power dissipation | PD | 1 | W | at TL = 75 °C (note 1: TL = lead temperature at 3/8 in (9.5 mm) from body) | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 | ||
| Junction temperature range | TJ | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
SMA4731A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sma4731a-etched.step/sma4731a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma4731a.step/sma4731a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZHIDE datasheet (3 pp, sha256
cb19d95850c9d88e, 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).