component
1SMB5918B
Public Made by Adomby adom
LGE Zener Diodes, SMB(DO-214AA). 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
markdown1SMB5918B
LGE · Zener Diodes · SMB(DO-214AA)
1SMB5918B from LGE, in a SMB(DO-214AA). 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 | SMB(DO-214AA) |
| 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 tolerance (suffix B, ±5.0%) | VZ | -5 | 5 | % | Suffix B indicates ±5.0% tolerance (Note 1) | 2 | |
| Maximum Zener Impedance | ZZT | 4 | Ω | @ IZT = 73.5 mA | 2 | ||
| Maximum Zener Impedance at knee | ZZK | 500 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VR = 2.0 V | 2 | ||
| Maximum DC Zener Current | IZM | 294 | mA | 2 | |||
| Maximum Forward Voltage | VF | 1.5 | Volts | @ IF = 200 mA | 1 | ||
| DC Power Dissipation | PD | 1.5 | Watts | @ TL = 75 °C (Note 1: TL = lead temperature at 5.0 mm2 (0.013 mm thick) copper land areas) | 1 | ||
| Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | TS | -55 | 150 | °C | 1 | ||
| Nominal Zener Voltage | VZ | 5.1 | V | @ IZT = 73.5 mA | 2 |
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 | (1) TL = Lead temperature at 5.0 mm2 ( 0.013 mm thick ) copper land areas. | 1 |
CAD (KiCad official)
- Symbol:
1SMB5918B - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
1smb5918b-etched.step/1smb5918b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1smb5918b.step/1smb5918b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (2 pp, sha256
23542ce852d79da7, 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).