component
SMA4757A
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
markdownSMA4757A
ZHIDE · Zener Diodes · SMA
SMA4757A 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 (nominal, average) | VZ | 51 | V | @IZT 95.0 mA (page 3 table row SMA4757A) | 3 | ||
| Zener voltage (minimum) | VZ MIN | 48.45 | V | @IZT 95.0 mA | 3 | ||
| Zener voltage (maximum) | VZ MAX | 53.55 | V | @IZT 95.0 mA | 3 | ||
| Maximum zener impedance | ZZT | 5 | Ω | @IZT 95.0 mA | 3 | ||
| Maximum zener impedance (knee) | ZZK | 1500 | Ω | @IZK 0.25 mA | 3 | ||
| Maximum reverse leakage current | IR | 0.5 | uA | @VR 38.8 V | 3 | ||
| Maximum DC zener current | IZM | 18 | mA | 3 | |||
| Maximum forward voltage | VF | 1.2 | V | at if=200mA | 1 | ||
| DC power dissipation | PD | 1 | W | at TL = 75 °C (1) | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 | ||
| Junction temperature range | TJ | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
SMA4757A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sma4757a-etched.step/sma4757a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma4757a.step/sma4757a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZHIDE datasheet (3 pp, sha256
cb19d95850c9d88e, retrieved 2026-10-21, 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).