component

P4KE33A

Public Made by Adom

by adom

DOWO TVS, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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P4KE33A

DOWO · TVS · DO-41

P4KE33A 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 end of the unidirectional P4KE33A, marked by the color band; breakdown voltage 31.35 to 34.65 V at 1 mA, working peak reverse voltage 28.2 V, maximum clamping voltage 45.7 V at 8.75 A.
2 A passive Anode end of the unidirectional P4KE33A, opposite the color band; forward voltage is below 3.5 V at 25 A and peak forward surge current is 40 A (8.3 ms half sine).

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 VBR 31.35 34.65 V @IT = 1 mA 3
Maximum Reverse Leakage IR 1 uA @VRWM 3
Working Peak Reverse Voltage VRWM 28.2 V 3
Maximum Reverse Surge Current IPP 8.75 A 10/1000us waveform 3
Maximum Clamping Voltage VC 45.7 V @IPP 3
Breakdown voltage tolerance (A suffix) -5 5 % Suffix A denotes 5% tolerance 3
Peak power dissipation PPP 400 W 10/1000us waveform, TA=25C 1
Power dissipation on infinite heatsink PD 1 W TL = 75 °C 1
Peak forward surge current IFSM 40 A 8.3 ms single half sine-wave, unidirectional only 1
Maximum instantaneous forward voltage VF 3.5 V at 25 A, unidirectional only, VBR<200V 1
Operating junction and storage temperature TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: P4KE33A
  • 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 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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