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LM5Z18VT1G
Public Made by Adomby adom
LRC Zener Diodes, SOD-523. Pinout cross-checked by two models against the datasheet, 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
markdownLM5Z18VT1G
LRC · Zener Diodes · SOD-523
LM5Z18VT1G from LRC, in a SOD-523. 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 | CATHODE | passive | Cathode of the Zener diode (reverse breakdown VZ 16.8 V min, 18 V nom, 19.1 V max @ IZT = 2 mA for LM5Z18VT1G). |
| 2 | ANODE | passive | Anode of the Zener diode; forward voltage VF 0.9 V max @ IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOD-523 |
| 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 | 16.8 | 18 | 19.1 | V | @ IZT = 2 mA | 3 |
| Zener Test Current | IZT | 2 | mA | 3 | |||
| Maximum Zener Impedance | ZZT | 45 | Ω | @ IZT | 3 | ||
| Maximum Zener Impedance | ZZK | 225 | Ω | @ IZK = 1.0 mA | 3 | ||
| Reverse Leakage Current | IR | 0.05 | µA | @ VR = 12.6 V | 3 | ||
| Temperature Coefficient of VZ | VZ | 12.4 | 16 | mV/k | @ IZT | 3 | |
| Capacitance | C | 100 | pF | @ VR = 0, f = 1 MHz | 3 | ||
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA, all types | 2 | ||
| Total Device Dissipation | PD | 200 | mW | FR-5 Board, TA = 25°C | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Ambient | RΘJA | 635 | ºC/W | 1 | |||
| Thermal Resistance Junction-to-Case | RΘJC | 350 | ºC/W | 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 | LEAD FINISH: 100% Matte Sn (Tin) QUALIFIED MAX REFLOW TEMPERATURE: 260°C | 1 |
CAD (KiCad official)
- Symbol:
LM5Z18VT1G - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
lm5z18vt1g-etched.step/lm5z18vt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm5z18vt1g.step/lm5z18vt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (7 pp, sha256
2b08b181a5f4d4f9, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).