component
LYA2.8-4
Public Made by Adomby adom
Liown ESD And Surge Protection (TVS/ESD), SO-8. 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
markdownLYA2.8-4
Liown · ESD And Surge Protection (TVS/ESD) · SO-8
LYA2.8-4 from Liown, in a SO-8. 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 | Terminal of the lower-left TVS diode element in the circuit schematic, paired with pin 2; protects one of the four I/O lines (VRWM 2.8V max, IEC 61000-4-2 ±30kV air/contact). |
| 2 | 2 | passive | Terminal of the lower-left TVS diode element in the circuit schematic, paired with pin 1; protects one of the four I/O lines (VRWM 2.8V max). |
| 3 | 3 | passive | Terminal of the lower-right TVS diode element in the circuit schematic, paired with pin 4; protects one of the four I/O lines (VRWM 2.8V max). |
| 4 | 4 | passive | Terminal of the lower-right TVS diode element in the circuit schematic, paired with pin 3; protects one of the four I/O lines (VRWM 2.8V max). |
| 5 | 5 | passive | Terminal of the upper-right TVS diode element in the circuit schematic, paired with pin 6; protects one of the four I/O lines (VRWM 2.8V max). |
| 6 | 6 | passive | Terminal of the upper-right TVS diode element in the circuit schematic, paired with pin 5; protects one of the four I/O lines (VRWM 2.8V max). |
| 7 | 7 | passive | Terminal of the upper-left TVS diode element in the circuit schematic, paired with pin 8; protects one of the four I/O lines (VRWM 2.8V max). |
| 8 | 8 | passive | Terminal of the upper-left TVS diode element in the circuit schematic, paired with pin 7; protects one of the four I/O lines (VRWM 2.8V max). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| Package | SO-8 |
| Category | Circuit Protection |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power (8/20µs) | PPP | 600 | W | 8/20µs | 2 | ||
| Peak Pulse Current (8/20µs) | IPP | 30 | A | 8/20µs | 2 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | kV | IEC 61000-4-2 Air | 2 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 | 30 | kV | IEC 61000-4-2 Contact | 2 | |
| Ambient Temperature Range | TA | -55 | 125 | ℃ | 2 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 2 | ||
| Reverse Working Voltage | VRWM | 2.8 | V | 2 | |||
| Breakdown Voltage | VBR | 3 | V | IT = 2µA | 2 | ||
| Reverse Leakage Current | IR | 1 | µA | VRWM = 2.8V | 2 | ||
| Clamping Voltage | VC | 8.5 | V | IPP = 5A (8/20µs) | 2 | ||
| Clamping Voltage | VC | 18 | V | IPP = 25A (8/20µs) | 2 | ||
| Clamping Voltage | VC | 20 | V | IPP = 30A (8/20µs) | 2 | ||
| Junction Capacitance | CJ | 2 | 3 | pF | VR = 0V, f = 1MHz | 2 |
CAD (KiCad official)
- Symbol:
LYA2.8-4 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
lya2-8-4-etched.step/lya2-8-4-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lya2-8-4.step/lya2-8-4.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Liown datasheet (5 pp, sha256
c3c7d19b6f53517a, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).