component

ESDA5V3LY

Public Made by Adom

by adom

STMicroelectronics ESD And Surge Protection (TVS/ESD), SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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ESDA5V3LY

STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SOT-23

ESDA5V3LY from STMicroelectronics, in a SOT-23. 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 A1 passive Anode of diode D1; protected signal line 1; stand-off voltage VRM = 3 V (IRM max 2 µA), breakdown voltage VBR = 5.3-5.9 V at IR = 1 mA, forward voltage VF max 1.25 V at IF = 200 mA.
2 A2 passive Anode of diode D2; protected signal line 2; same ratings as pin 1 (VRM = 3 V, VBR = 5.3-5.9 V at 1 mA); pins 1 and 2 may be connected together for bidirectional suppressor use.
3 K passive Common cathode of D1 and D2; connect to supply or clamping rail; peak pulse current Ipp max 25 A (8/20 µs), dynamic impedance Rd typ 280 mΩ, line capacitance Cline typ 220 pF at 0 V bias.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23
Category Circuit Protection
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Breakdown voltage min VBR 5.3 V at IR = 1 mA 3
Breakdown voltage max VBR 5.9 V at IR = 1 mA 3
Reverse leakage current max IRM 2 µA at VRM = 3 V 3
Dynamic impedance max Rd 280 mΩ Square pulse Ipp = 15 A, tp = 2.5 µs 3
Forward voltage max VF 1.25 V at IF = 200 mA 3
Line capacitance Cline 220 pF at 0 V bias 3
Peak pulse power Ppp 300 W 8/20 µs 2
Peak pulse current Ipp 25 A 8/20 µs, ESDA5V3LY 2
Peak pulse voltage contact discharge Vpp 30 kV ISO 10605 C = 330 pF, R = 330 Ω, contact discharge 2
Peak pulse voltage air discharge Vpp 30 kV ISO 10605 C = 330 pF, R = 330 Ω, air discharge 2
Operating junction temperature range Tj -40 150 °C 2
Storage junction temperature range Tstg -65 150 °C 2
Maximum soldering temperature TL 260 °C during 10 s 2
Temperature coefficient of breakdown voltage αT 5 10-4/°C ΔVBR = αT x (Tamb -25 °C) x VBR(25 °C) 3

CAD (KiCad official)

  • Symbol: ESDA5V3LY
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: esda5v3ly-etched.step / esda5v3ly-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esda5v3ly.step / esda5v3ly.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (12 pp, sha256 f99725629ff69da5, retrieved 2026-10-20, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF