component
1SMA4758A
Public Made by Adomby adom
BORN Zener Diodes, SMA(DO-214AC). 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
markdown1SMA4758A
BORN · Zener Diodes · SMA(DO-214AC)
1SMA4758A from BORN, in a SMA(DO-214AC). 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 | BORN |
| Package | SMA(DO-214AC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Dissipation | PD | 1 | W | @TA=25℃ | 1 | ||
| Maximum Forward voltage | VF | 1.2 | V | IF=200mA | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | @TA=25℃ | 1 | |
| Operating Junction Temperature Range | TJ | -55 | 150 | °C | @TA=25℃ | 1 | |
| Thermal Resistance Junction To Ambient Air | RθJA | 100 | °C/W | 1 | |||
| Thermal Resistance Junction To Leads | RθJL | 25 | °C/W | 1 | |||
| Maximum Zener Impedance | ZZT | 110 | Ω | @ IZT = 4.5 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 2000 | Ω | @ IZK = 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VR = 42.6 V | 2 | ||
| Maximum DC Zener Current | IZM | 16 | mA | 2 | |||
| Nominal Zener Voltage | VZ | 56 | V | @ IZT = 4.5 mA | 2 |
CAD (KiCad official)
- Symbol:
1SMA4758A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
1sma4758a-etched.step/1sma4758a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma4758a.step/1sma4758a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BORN datasheet (5 pp, sha256
73b9c8f156ddef30, 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).