component
P4KE33A
Public Made by Adomby 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# 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](docs/p4ke33a-datasheet.pdf) (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](docs/p4ke33a-datasheet.pdf)