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ESD5A121TA

Public Made by Adom

by adom

DOWO ESD Protection Devices, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componenttvs-fuse-board level protectionesd5a121tafactory-2.0.0extractor-text
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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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Contents

README

markdown

ESD5A121TA

DOWO · ESD Protection Devices · SOD-323

ESD5A121TA from DOWO, in a SOD-323. 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 DOWO
Package SOD-323
Category TVS/Fuse/Board Level 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
Peak Pulse Power Ppk 450 W 8/20µs 2
Peak Pulse Current IPP 30 A 8/20µs 2
ESD per IEC 61000-4-2 (Air) VESD -30 30 kV IEC 61000-4-2 air discharge 2
ESD per IEC 61000-4-2 (Contact) VESD -30 30 kV IEC 61000-4-2 contact discharge 2
Operating Temperature Range TJ -55 125 °C 2
Storage Temperature Range Tstg -55 150 °C 2
Reverse Working Voltage VRWM 5 V 2
Breakdown Voltage VBR 6 7 8 V IT = 1mA (Pin1-Pin2) 2
Reverse Leakage Current IR 0.5 µA VRWM = 5.0V (Pin2-Pin1) 2
Clamping Voltage VC 9 11 V IPP = 10A (8 x 20µs pulse) (Pin1-Pin2) 2
Clamping Voltage VC 12 15 V IPP = 30A (8 x 20µs pulse) (Pin1-Pin2) 2
Junction Capacitance CJ 60 100 pF VR = 0V, f = 1MHz (Pin1-Pin2) 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Lead Finish: Matte Tin Marking Diagram Ordering Information 1

CAD (KiCad official)

  • Symbol: ESD5A121TA
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: esd5a121ta-etched.step / esd5a121ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esd5a121ta.step / esd5a121ta.glb are the bare package body.

Provenance

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

  • Datasheet: DOWO datasheet (4 pp, sha256 51072939e42db6f1, retrieved 2026-10-28, 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