component

3KP18A

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by adom

DOWO ESD And Surge Protection (TVS/ESD), P600. 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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3KP18A

DOWO · ESD And Surge Protection (TVS/ESD) · P600

3KP18A from DOWO, in a P600. 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 P600
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
Breakdown voltage (3KP18A, 5% unidirectional) VBR 20 22.1 V @IT 5 mA 3
Maximum reverse leakage IR 2 uA @VRWM 18 V 3
Maximum reverse surge current IPP 102.7 A 3
Maximum clamping voltage VC 29.2 V @IPP 3
Working peak reverse voltage VRWM 18 V 3
Peak power dissipation PPP 3000 W 10/1000μs waveform (1) 1
Peak forward surge current IFSM 300 A 8.3 ms single half sine-wave, unidirectional only (2) 1
Power dissipation on infinite heatsink PD 6.5 W TL = 75 °C 1
Maximum instantaneous forward voltage VF 3.5 V at 100 A, unidirectional only; 3.5 V limit applies to VBR<200 V (note 3) 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: 3KP18A
  • Footprint: Diode_THT:D_P600_R-6_P20.00mm_Horizontal
  • 3D model: P600 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: DOWO datasheet (4 pp, sha256 0cb8ec8a6a624a93, retrieved 2026-10-16, 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