component
1SMA5931H
Public Made by Adomby adom
Taiwan Semiconductor 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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Contents
README
markdown1SMA5931H
Taiwan Semiconductor · Zener Diodes · SMA(DO-214AC)
1SMA5931H from Taiwan Semiconductor, 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 | Taiwan Semiconductor |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage | VZ | 17.1 | 18 | 18.9 | V | @ IZT = 20.8 mA; TA = 25°C; limits guaranteed at thermal equilibrium | 2 |
| Regulator impedance | ZZT | 12 | Ω | @ IZT = 20.8 mA | 2 | ||
| Regulator impedance | ZZK | 650 | Ω | @ IZK = 0.25 mA | 2 | ||
| Leakage current | IR | 0.5 | µA | @ VR = 13.7 V | 2 | ||
| Maximum DC Zener current | IZM | 83 | mA | 2 | |||
| Zener voltage tolerance (type number designation) | -5 | 5 | % | Type number 1SMA5931H indicates ±5% tolerance (Note 1) | 2 | ||
| DC power dissipation | PD | 1.5 | W | at TL = 75°C, zero lead length; mounted on 5mm x 5mm Cu pad test board | 1 | ||
| Peak forward surge current | IFSM | 10 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 | ||
| Junction temperature | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature | TSTG | -55 | 150 | °C | 1 | ||
| Power derating above 75°C | 20 | mW/°C | derate above TL = 75°C (Note 1) | 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 | tin | ● Terminal: Matte tin plated leads, solderable per J-STD-002 ● Meet JESD 201 class 2 whisker test | 1 |
CAD (KiCad official)
- Symbol:
1SMA5931H - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
1sma5931h-etched.step/1sma5931h-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma5931h.step/1sma5931h.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Taiwan Semiconductor datasheet (6 pp, sha256
04c42e2cbcce4233, 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).