component
1SMA5951B
Public Made by Adomby adom
LGE Zener Diodes, DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 2d ago |
| viewers | 2d ago |
| 1sma5951b-etched.glb | 2d ago |
| 1sma5951b-etched.step | 2d ago |
| 1sma5951b-hero.glb | 2d ago |
| 1sma5951b-hero.overlay.json | 2d ago |
| 1sma5951b.glb | 2d ago |
| 1sma5951b.kicad_mod | 2d ago |
| 1sma5951b.kicad_sym | 2d ago |
| 1sma5951b.lbr | 2d ago |
| 1sma5951b.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
1SMA5951B
LGE · Zener Diodes · DO-214AC(SMA)
1SMA5951B from LGE, in a DO-214AC(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 | LGE |
| Package | DO-214AC(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 |
|---|---|---|---|---|---|---|---|
| Maximum Zener Impedance | ZZT | 380 | Ω | @ IZT 3.1 mA | 2 | ||
| Maximum Zener Impedance | ZZK | 4500 | Ω | @ IZK 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 1 | μA | @ VR 91.2 V | 2 | ||
| Maximum DC Zener Current | IZM | 12 | mA | 2 | |||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 1 | ||
| DC Power Dissipation | PD | 1.5 | W | @ TL = 75 °C, measured zero lead length (1 in square copper pad, FR-4 board) | 1 | ||
| DC Power Dissipation | PD | 0.5 | W | @ Ta = 25 °C (FR-4 board) | 1 | ||
| Zener voltage tolerance (suffix B) | VZ | -5 | 5 | % | Suffix B indicates ±5% tolerance | 2 | |
| Nominal Zener Voltage | VZ | 120 | V | @ IZT 3.1 mA | 2 | ||
| Derate above 75 °C (DC power dissipation at TL) | 20 | mW/°C | above TL = 75 °C | 1 | |||
| Derate above 25 °C (DC power dissipation at Ta) | 4 | mW/°C | above Ta = 25 °C (FR-4 board) | 1 | |||
| Thermal Resistance Junction to Lead | RӨJL | 50 | °C/W | junction to lead | 1 | ||
| Thermal Resistance Junction to Ambient | RӨJA | 250 | °C/W | junction to ambient, FR-4 board | 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 | copper | Measured zero lead length(1" square copper pad, FR-4 board) 20 | 1 |
CAD (KiCad official)
- Symbol:
1SMA5951B - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
1sma5951b-etched.step/1sma5951b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma5951b.step/1sma5951b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (2 pp, sha256
2d9536ccf7f2af5d, 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).