component

PESD3V3U1UB

Public Made by Adom

by adom

UMW ESD And Surge Protection (TVS/ESD), SOD-523. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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page.json Set visibility: public · Ray 13d ago
pesd3v3u1ub-etched.glb Publish 0.1.0 · Ray 13d ago
pesd3v3u1ub-etched.step pesd3v3u1ub: factory component page (tier=lcsc) · Ray 13d ago
pesd3v3u1ub-hero.glb pesd3v3u1ub: hero GLB from the etched model (keeps the MPN mark) · Ray 13d ago
pesd3v3u1ub-hero.overlay.json Publish 0.1.0 · Ray 13d ago
pesd3v3u1ub.glb Publish 0.1.0 · Ray 13d ago
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README.md Publish 0.1.0 · Ray 13d ago

PESD3V3U1UB

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

PESD3V3U1UB from UMW, 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 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer UMW
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
Reverse standoff voltage VRWM 3.3 V 2
Reverse leakage current IRM 1 nA VRWM=3V 2
Breakdown voltage VBR 4.5 5.6 6.8 V IR=5mA 2
Diode capacitance Cd 2.6 3.1 pF VR=0V, f=1MHz 2
Electrostatic discharge voltage, IEC 61000-4-2 contact discharge VESD 9 kV IEC 61000-4-2 (contact discharge), ten non-repetitive pulses 2
Electrostatic discharge voltage, human body model VESD 10 kV MIL-STD-883 (human body model) 2
Junction temperature TJ 150 °C 2
Ambient temperature Tamb -55 150 °C 2
Storage temperature TSTG -65 150 °C 2

CAD (KiCad official)

  • Symbol: PESD3V3U1UB
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523 (KiCad packages3D, STEP)
  • 3D model files: pesd3v3u1ub-etched.step / pesd3v3u1ub-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pesd3v3u1ub.step / pesd3v3u1ub.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (7 pp, sha256 8e0e615782ddc97f, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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