component

LYA2.8-4

Public Made by Adom

by adom

Liown ESD And Surge Protection (TVS/ESD), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LYA2.8-4

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lya2-8-4.step / lya2-8-4.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF