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LM3Z18VT1G
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LRC Zener Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM3Z18VT1G
LRC · Zener Diodes · SOD-323
LM3Z18VT1G from LRC, in a SOD-323. 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 terminal, indicated by the polarity band on the package; the device is a 200 mW Zener with a nominal 18 V breakdown (VZ 16.8 V min to 19.1 V max at IZT = 5 mA). |
| 2 | ANODE | passive | Anode terminal; the maximum forward voltage is 0.9 V at IF = 10 mA, and the junction and storage temperature range is -65 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 16.8 | 18 | 19.1 | V | @ IZT = 5 mA; pulse test at TA = 25°C (Note 2) | 3 |
| Maximum Zener Impedance @ IZT | ZZT | 45 | Ω | @ IZT = 5 mA | 3 | ||
| Maximum Zener Impedance @ IZK | ZZK | 400 | Ω | @ IZK = 0.5 mA | 3 | ||
| Reverse Leakage Current | IR | 0.05 | µA | @ VR = 12.6 V | 3 | ||
| Maximum Temperature Coefficient of VZ | VZ | 12.4 | 16 | mV/k | @ IZT = 5 mA | 3 | |
| Maximum Capacitance | C | 100 | pF | @ VR = 0 V, f = 1 MHz | 3 | ||
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Total Device Dissipation | PD | 200 | mW | @ TA = 25°C; FR-4 minimum pad (Note 1) | 1 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 635 | °C/W | FR-4 minimum pad (Note 1) | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| Derate above 25°C | 1.5 | mW/°C | Derate above TA = 25°C | 1 |
CAD (KiCad official)
- Symbol:
LM3Z18VT1G - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
lm3z18vt1g-etched.step/lm3z18vt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3z18vt1g.step/lm3z18vt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (6 pp, sha256
0b57e4c3ff5c9f5d, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# LM3Z18VT1G
**LRC** · Zener Diodes · SOD-323
LM3Z18VT1G from LRC, in a SOD-323. 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 terminal, indicated by the polarity band on the package; the device is a 200 mW Zener with a nominal 18 V breakdown (VZ 16.8 V min to 19.1 V max at IZT = 5 mA). |
| 2 | ANODE | passive | Anode terminal; the maximum forward voltage is 0.9 V at IF = 10 mA, and the junction and storage temperature range is -65 to +150 °C. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 16.8 | 18 | 19.1 | V | @ IZT = 5 mA; pulse test at TA = 25°C (Note 2) | 3 |
| Maximum Zener Impedance @ IZT | ZZT | | | 45 | Ω | @ IZT = 5 mA | 3 |
| Maximum Zener Impedance @ IZK | ZZK | | | 400 | Ω | @ IZK = 0.5 mA | 3 |
| Reverse Leakage Current | IR | | | 0.05 | µA | @ VR = 12.6 V | 3 |
| Maximum Temperature Coefficient of VZ | VZ | 12.4 | | 16 | mV/k | @ IZT = 5 mA | 3 |
| Maximum Capacitance | C | | | 100 | pF | @ VR = 0 V, f = 1 MHz | 3 |
| Forward Voltage | VF | | | 0.9 | V | @ IF = 10 mA | 2 |
| Total Device Dissipation | PD | | | 200 | mW | @ TA = 25°C; FR-4 minimum pad (Note 1) | 1 |
| Thermal Resistance, Junction to Ambient | RθJA | | | 635 | °C/W | FR-4 minimum pad (Note 1) | 1 |
| Junction and Storage Temperature Range | TJ, Tstg | -65 | | 150 | °C | | 1 |
| Derate above 25°C | | | 1.5 | | mW/°C | Derate above TA = 25°C | 1 |
## CAD (KiCad official)
- Symbol: `LM3Z18VT1G`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `lm3z18vt1g-etched.step` / `lm3z18vt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3z18vt1g.step` / `lm3z18vt1g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586187008728813568) (6 pp, sha256 `0b57e4c3ff5c9f5d`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/lm3z18vt1g-datasheet.pdf)