component
LY323DC12UL
Public Made by Adomby adom
Liown ESD And Surge Protection (TVS/ESD), SOD-323. 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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README
markdownLY323DC12UL
Liown · ESD And Surge Protection (TVS/ESD) · SOD-323
LY323DC12UL from Liown, 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 | 1 | passive | Bi-directional TVS terminal (polarity-independent) for LY323DC12UL with 12.0V max reverse working voltage, 13.3V min breakdown at 1mA, and 25V max clamping at 8/20µs IPP of 14A... see review. |
| 2 | 2 | passive | Second bi-directional TVS terminal (polarity-independent) for LY323DC12UL, rated 300W peak pulse power (8/20µs) and ±30kV IEC 61000-4-2 air/contact ESD. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| Package | SOD-323 |
| Category | Circuit Protection |
| 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 Working Voltage | VRWM | 12 | V | 2 | |||
| Reverse Breakdown Voltage | VBR | 13.3 | V | @IT=1mA | 2 | ||
| Reverse Leakage Current | IR | 0.2 | µA | @VRWM | 2 | ||
| Clamping Voltage | VC | 18 | V | @1A, 8/20µs | 2 | ||
| Clamping Voltage | VC | 25 | V | @IPP, 8/20µs, IPP=16A? see table | 2 | ||
| Junction Capacitance | CJ | 14 | pF | @VR=0V, f=1MHz | 2 | ||
| Peak Pulse Power | PPP | 300 | W | 8/20µs, TA=25℃ | 2 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | kV | TA=25℃ | 2 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 | 30 | kV | TA=25℃ | 2 | |
| Ambient Temperature Range | TA | -55 | 125 | ℃ | 2 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
LY323DC12UL - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
ly323dc12ul-etched.step/ly323dc12ul-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ly323dc12ul.step/ly323dc12ul.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Liown datasheet (5 pp, sha256
3f2d02a1f20f6ce6, 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).