component

P4KE550A

Public Made by Adom

by adom

DOWO TVS, DO-41. 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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P4KE550A

DOWO · TVS · DO-41

P4KE550A from DOWO, in a DO-41. 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 DO-41
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 (P4KE550A, unidirectional, 5% tolerance) VBR 522.5 577.5 V @IT = 1 mA 4
Maximum reverse leakage current IR 1 uA @VRWM = 470.3 V 4
Maximum reverse surge current IPP 0.53 A 4
Maximum clamping voltage VC 759 V @IPP 4
Maximum instantaneous forward voltage VF 5 V at 25 A, unidirectional only; 5.0 V applies to devices with VBR > 201 V 1
Peak power dissipation PPP 400 W 10/1000 us waveform 1
Peak forward surge current IFSM 40 A 8.3 ms single half sine-wave, unidirectional only 1
Power dissipation PD 1 W on infinite heatsink at TL = 75 °C 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: P4KE550A
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: DOWO datasheet (4 pp, sha256 4ba90080a69ac1bb, 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