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WS03D5-B

Public Made by Adom

by adom

Wayon ESD And Surge Protection (TVS/ESD), SOD-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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WS03D5-B

Wayon · ESD And Surge Protection (TVS/ESD) · SOD-523

WS03D5-B from Wayon, in a SOD-523. 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 One terminal of the single-line TVS that protects one I/O or power line, with a 3.3V working voltage and 360W peak pulse power (8/20µs); the datasheet does not state whether this pin is the anode or cathode.
2 2 passive The other terminal of the single-line TVS that protects one I/O or power line, with a 3.3V working voltage and 360W peak pulse power (8/20µs); the datasheet does not state whether this pin is the anode or cathode.

Key specifications

Parameter Value
Manufacturer Wayon
Package SOD-523
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
Operating Temperature TJ -55 125 ℃ 2
Storage Temperature TSTG -55 150 ℃ 2
Peak Pulse Power PPP 360 Watts tp =8/20μs 2
Peak Pulse Current Ipp 30 A tp =8/20μs 2
Reverse Stand-Off Voltage VRWM 3.3 V 2
Reverse Breakdown Voltage VBR 4 6.5 V IT=1mA 2
Reverse Leakage Current IR 500 nA VRWM=3.3V,T=25℃ 2
Clamping Voltage VC 9 12 V IPP=30A,tp=8/20μs 2
Junction Capacitance Cj 60 100 pF VR = 0V, f = 1MHz 2
Dynamic Resistance RDYN 0.08 Ω TLP=0.2/100ns 2
ESD Clamping Voltage (4A TLP) VC 5.4 V IPP = 4A, tp = 0.2/100ns(TLP) 2
ESD Clamping Voltage (16A TLP) VC 6.3 V IPP = 16A, tp = 0.2/100ns (TLP) 2

CAD (KiCad official)

  • Symbol: WS03D5-B
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: ws03d5-b-etched.step / ws03d5-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ws03d5-b.step / ws03d5-b.glb are the bare package body.

Provenance

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

  • Datasheet: Wayon datasheet (5 pp, sha256 dbf5334723d2d24b, retrieved 2026-10-21, 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